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1
Guo, Xing Mei, and Yi Ping Qiu. "Hemp Fiber Reinforced Composites: Morphological and Mechanical Properties." Advanced Materials Research 332-334 (September 2011): 121–25. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.121.
Повний текст джерелаАнотація:
The use of natural plant fibers as reinforcing fillers in fiber-polymer composites has drawn much interest in recent years. Natural plant fibers as reinforcing fillers have several advantages over inorganic fillers such as glass fibers; they are abundant, readily available, renewable, inexpensive, biodegradable, of low density, and of high specific strength. Hemp fibers are one of the most attractive natural plant fibers for fiber-reinforced composites because of their exceptional specific stiffness. In this review, we summarize recent progress in developments of the hemp fiber reinforced composites such as hemp fiber reinforced unsaturated polyester (UPE), hemp fiber reinforced polypropylene (PP), hemp fiber reinforced epoxy composites, and so on, illustrate with examples how they work, and discuss their intrinsic fundamentals and optimization designs. We are expecting the review to pave the way for developing fiber-polymer composites with higher strength.
2
Ndoumou, Rémy Legrand, Damien Soulat, Ahmad Rashed Labanieh, Manuela Ferreira, Lucien Meva’a, and Jean Atangana Ateba. "Characterization of Tensile Properties of Cola lepidota Fibers." Fibers 10, no. 1 (January 12, 2022): 6. http://dx.doi.org/10.3390/fib10010006.
Повний текст джерелаАнотація:
Plant fibers are being increasingly explored for their use in engineering polymers and composites, and many works have described their properties, especially for flax and hemp fibers. Nevertheless, the availability of plant fibers varies according to the geographical location on the planet. This study presents the first work on the mechanical properties of a tropical fiber extracted from the bast of Cola lepidota (CL) plant. After a debarking step, CL fibers were extracted manually by wet-retting. The tensile properties are first identified experimentally at the fibers scale, and the analysis of the results shows the great influence of the cross-section parameters (diameter, intrinsic porosities) on these properties. Tensile properties of CL fibers are also predicted by the impregnated fiber bundle test (IFBT). At this scale of bundles, a hackling step, which reduces shives and contributes to the parallelization of the fibers within bundles, improves tensile properties predicted by IFBT. The comparison with the properties of plant fibers given in the literature shows that CL fibers have tensile properties in the same range as kenaf, flax or hemp fibers.
3
Zhong, Yucheng, Umeyr Kureemun, Le Quan Ngoc Tran, and Heow Pueh Lee. "Natural Plant Fiber Composites-Constituent Properties and Challenges in Numerical Modeling and Simulations." International Journal of Applied Mechanics 09, no. 04 (May 7, 2017): 1750045. http://dx.doi.org/10.1142/s1758825117500454.
Повний текст джерелаАнотація:
Natural fibers are extracted from natural resources such as stems of plants. In contrast to synthetic fibers (e.g., carbon fibers), natural fibers are from renewable resources and are eco-friendlier. Plant fibers are important members of natural fibers. Review papers discussing the microstructures, performances and applications of natural plant fiber composites are available in the literature. However, there are relatively fewer review reports focusing on the modeling of the mechanical properties of plant fiber composites. The microstructures and mechanical behavior of plant fiber composites are briefly introduced by highlighting their characteristics that need to be considered prior to modeling. Numerical works that have already been carried out are discussed and summarized. Unlike synthetic fibers, natural plant fiber composites have not received sufficient attention in terms of numerical simulations. Existing technical challenges in this subject are summarized to provide potential opportunities for future research.
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Lv, Chun, Jie Liu, Guoliang Guo, and Yanming Zhang. "The Mechanical Properties of Plant Fiber-Reinforced Geopolymers: A Review." Polymers 14, no. 19 (October 2, 2022): 4134. http://dx.doi.org/10.3390/polym14194134.
Повний текст джерелаАнотація:
Both geopolymer and plant fiber (PF) meet the requirements of sustainable development. Geopolymers have the advantages of simple preparation process, conservation and environmental protection, high early strength, wide source of raw materials, and low cost. They have broad application prospects and are considered as the most potential cementitious materials to replace cement. However, due to the ceramic-like shape and brittleness of geopolymers, their flexural strength and tensile strength are poor, and they are sensitive to microcracks. In order to solve the brittleness problem of geopolymers, the toughness of composites can be improved by adding fibers. Adding fibers to geopolymers can limit the growth of cracks and enhance the ductility, toughness and tensile strength of geopolymers. PF is a good natural polymer material, with the advantages of low density, high aspect ratio. It is not only cheap, easy to obtain, abundant sources, but also can be repeatedly processed and biodegradable. PF has high strength and low hardness, which can improve the toughness of composites. Nowadays, the research and engineering application of plant fiber-reinforced geopolymers (PFRGs) are more and more extensive. In this paper, the recent studies on mechanical properties of PFRGs were reviewed. The characteristics of plant fibers and the composition, structure and properties of geopolymers were reviewed. The compatibility of geopolymer material and plant fiber and the degradation of fiber in the substrate were analyzed. From the perspective of the effect of plant fibers on the compression, tensile and bending properties of geopolymer, the reinforcing mechanism of plant fibers on geopolymer was analyzed. Meanwhile, the effect of PF pretreatment on the mechanical properties of the PFRGs was analyzed. Through the comprehensive analysis of PFFRGs, the limitations and recommendations of PFFRG are put forward.
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Madsen, Bo, and E. Kristofer Gamstedt. "Wood versus Plant Fibers: Similarities and Differences in Composite Applications." Advances in Materials Science and Engineering 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/564346.
Повний текст джерелаАнотація:
The work on cellulose fiber composites is typically strictly divided into two separated research fields depending on the fiber origin, that is, from wood and from annual plants, representing the two different industries of forest and agriculture, respectively. The present paper evaluates in parallel wood fibers and plant fibers to highlight their similarities and differences regarding their use as reinforcement in composites and to enable mutual transfer of knowledge and technology between the two research fields. The paper gives an introduction to the morphology, chemistry, and ultrastructure of the fibers, the modeling of the mechanical properties of the fibers, the fiber preforms available for manufacturing of composites, the typical mechanical properties of the composites, the modeling of the mechanical properties with focus on composites having a random fiber orientation and a non-negligible porosity content, and finally, the moisture sensitivity of the composites. The performance of wood and plant fiber composites is compared to the synthetic glass and carbon fibers conventionally used for composites, and advantages and disadvantages of the different fibers are discussed.
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Li, Yan, Yan Ping Hu, Chun Jing Hu, and Ye Hong Yu. "Microstructures and Mechanical Properties of Natural Fibers." Advanced Materials Research 33-37 (March 2008): 553–58. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.553.
Повний текст джерелаАнотація:
Natural fibers are excellent substitute materials for man made fibers in making fiber reinforced composites due to their high specific strength and modulus, low density, low price, easy availability in some countries, recyclable and degradable properties. They have raised great attentions among material scientists and engineers in the past decade. Many researches have been conducted to study the mechanical properties, especially interfacial properties of natural fiber reinforced composites. However, the properties, such as mechanical performances, moisture absorption behaviors, et. al of natural fibers themselves have been seldom investigated. Knowing the relationship between microstructures and properties of natural fibers are important for understanding the bulk properties of natural fiber composites and also good instructions for designing bio-mimic materials. In this study, four kinds of natural fibers which were extracted from different plant sources were investigated. The microstructures of these natural fibers were revealed with the aid of optical microscopy. Microstructure models were thereof set up and mechanical properties for the representative volume element were assumed. Fiber bundle fracture models together with probability statistics analysis were employed to calculate the mechanical properties of natural fibers. The results were compared with the experimental measurements. Different mechanical behaviors of natural fibers which were functioned differently in the nature were clearly explained by the above studies
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SAOUSSEN, ZANNEN, ZOUARI RIADH, HASSEN MOHAMED BEN, JEANMICHEL LAURENCE, and MOLINA STEPHANE. "Design of high mechanical and thermal resistant composites using marine plant waste." Industria Textila 69, no. 06 (January 1, 2019): 446–50. http://dx.doi.org/10.35530/it.069.06.1515.
Повний текст джерелаАнотація:
We investigate the mechanical and thermal properties of a composite structure manufactured from polypropylene matrix reinforced with marine waste fibers, Posidonia oceanica. We show that this fiber largely available on Mediterranean coasts presents many advantages compared to other natural fibers conventionally used as reinforcement. In fact, Posidonia fiber is extracted easily with only mechanical action. Moreover, it enhances the mechanical properties of the whole composite without any need of compatibilizers due to its hydrophobicity. Finally, apart from the mechanical performances, we demonstrate that the incorporation of the fiber with high ratio does not degrade its thermal properties which are a specificity of thermally resistant fibers that could open a wide range of applications.
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Patel, Mr Ashish Kumar. "Mechanical Properties of Luffa Cylindrica and Coconut Coir Reinforced Epoxy Hybrid Composite." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (November 30, 2021): 54–65. http://dx.doi.org/10.22214/ijraset.2021.38759.
Повний текст джерелаАнотація:
Abstract: In the current day scenario all the researchers and engineers are searching for a better and cheaper alternative for the current engineering materials. The project deals with the low cost, light weight and biodegradable composites and their use in the current industries. Substituting the legacy fiber reinforced composites with the low-cost natural plant- based fibers reinforced composites help us achieve comparative mechanical properties. India has a quite rich source of natural plant-based fibers which can be used for the production of natural fiber reinforced composites. In this project we used a combination of luffa fibers and coir fibers to produce an epoxy hybrid composite. The current project explores two different problems related to the natural fiber reinforced hybrid composite: 1) Study of mechanical properties of the hybrid thermosetting composite. 2) Study of possibilities of use of natural fiber reinforced epoxy hybrid composites in the different industries
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Subramaniam, Balasubramani, Manickavasagam V. M, Paul Theophilus Rajakumar I, P. Anantha Christu Raj, Bharath V. G, J. Madhusudhanan, Amit Kumar Sharma, Pravin Patil, and Gizachew Balcha Assefa. "Investigation of Mechanical Properties of Sansevieria cylindrica Fiber/Polyester Composites." Advances in Materials Science and Engineering 2022 (February 28, 2022): 1–6. http://dx.doi.org/10.1155/2022/2180614.
Повний текст джерелаАнотація:
Natural fiber-reinforced composites are the most cost-effective and environmentally friendly alternative to industrial applications. Composite materials reinforced with Sansevieria cylindrica (SC) fibers were developed in this research work. These fibers were chosen for their outstanding mechanical qualities. Compression moulding was used to create composite materials. Each leaf on a Sansevieria cylindrica plant is 20 to 30 mm thick, with a height of 1000 to 2000 mm. The Sansevieria cylindrica (SC) fibers were used as chemically treated fibers and untreated fibers to produce the composites. The tensile strength, hardness, and impact strength of various fiber weight% of composites (20%, 30%, 40%, and 50%) were calculated. From the tested results, the maximum tensile strength achieved in 40 wt% of treated SC fiber composites is 85.7 MPa. The maximum hardness is found in 40 wt% of composites in both treated and untreated fiber composites. The 40 wt% of composites gives a better impact energy of 9.4 J/cm2.The SC fiber polyester composites have superior interfacial bonding and give maximal strength in treated SC fiber composites. The fiber treatment delivers greater strength than the untreated fiber, according to this study. The treated SC fibers have better strength and good bonding between the fiber and matrix to produce the composite materials.
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Jariwala, Hitesh, and Piyush Jain. "A review on mechanical behavior of natural fiber reinforced polymer composites and its applications." Journal of Reinforced Plastics and Composites 38, no. 10 (February 7, 2019): 441–53. http://dx.doi.org/10.1177/0731684419828524.
Повний текст джерелаАнотація:
In the last decade, natural plant fibers (jute, sisal, coir, banana, hemp, kenaf, flax, etc.) are getting attention from many researchers and academicians to utilize it as an alternate reinforcement of synthetic fiber reinforced polymer composites. These fibers are becoming a great replacement of conventional fibers (such as glass, carbon, and aramid) due to their light weight, low cost, carbon neutrality, fairly good mechanical properties, high specific strength, and biodegradability characteristics. Some chemical treatments are required to enhance the fiber matrix interfacial strength and to minimize the moisture absorption by these fibers which would ultimately improve physico-mechanical properties of these fiber reinforced composites. This paper is a review on mechanical properties of the natural plant fiber reinforced polymer composites and various factors affecting the mechanical performance of it. The tribological behavior of natural fiber reinforced polymer composites and scanning electron microscope analysis are also discussed. Some mathematical models are mentioned which are useful to predict mechanical behavior of the composites. It is found that Halpin–Tsai equation is the most effective equation amongst others in predicting Young’s modulus for short-fiber reinforced composites with minimum error. The applications of natural plant fiber reinforced polymer composites in various engineering fields are discussed.
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Anil Kumar, V., T. Sai Neeraj, and Y. Meghana. "Mechanical Characterization and Fabrication of Banana and Pineapple Fibers." IOP Conference Series: Materials Science and Engineering 1248, no. 1 (July 1, 2022): 012061. http://dx.doi.org/10.1088/1757-899x/1248/1/012061.
Повний текст джерелаАнотація:
Abstract A composite material is made up of two or more materials with differing properties that are combined to enhance material properties. Various natural fibers are abundant in India such as seed hairs like cotton, flax, hemp leaf fibers, sisal, coconut, jute, pineapple, luffa, etc. Since natural fibers stand-alone don't have distinct mechanical properties. To attain good mechanical properties and to explore worth-added applications. The evolvement of natural fiber composites in India is to avoid the depletion of resources. The reason for the desirability of this field over the traditionally used synthetic fiber is that natural fibers have low density, high toughness, are environment friendly, fully biodegradable, renewable, and low cost. The biodegradability of plant fibers can impart a healthy ecosystem while their low cost & high performance fulfill the economic interest of industries. The purpose of this paper is to develop a new natural fiber composite with banana stem fibers and pineapple fibers. Resins and hardeners are chosen depending on the mechanical properties of the fibers, and fabrication was done accordingly. Finally, conclusions are drawn after Mechanical Testing of the composites. The properties of the composites are discussed.
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Journal, Baghdad Science. "Mechanical properties of carrot fiber - epoxy composite." Baghdad Science Journal 9, no. 2 (June 3, 2012): 335–40. http://dx.doi.org/10.21123/bsj.9.2.335-340.
Повний текст джерелаАнотація:
Interest has largely centered on the use of plant fibers to reinforce plastics, because these fibers are abundant and cheap. Carrot fibers (Curran) have been extracted from carrot, left over from carrot juice manufacture. The fibers of two sizes fine (50
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Latif, Rashid, Saif Wakeel, Noor Zaman Khan, Arshad Noor Siddiquee, Shyam Lal Verma, and Zahid Akhtar Khan. "Surface treatments of plant fibers and their effects on mechanical properties of fiber-reinforced composites: A review." Journal of Reinforced Plastics and Composites 38, no. 1 (October 2, 2018): 15–30. http://dx.doi.org/10.1177/0731684418802022.
Повний текст джерелаАнотація:
The need of natural fiber-reinforced composites is increasing at very fast rate because of their ecofriendly production, decomposition, high specific strength, abundance, good physical and mechanical properties. Available literature reveals that past researchers have done a lot of work for the preparation and characterization of fiber-reinforced composites. While developing natural fiber composites, researchers encountered various problems like hydrophilic nature of natural fibers, incompatibility of natural fibers with matrix materials, thermal instability of natural fibers, and poor interfacial bonding between reinforcing phase and matrix phase. However, some of these problems can be solved to a greater extent by considering surface treatment of natural fibers before they are used in the preparation of fiber-reinforced composites. Thus, there is a need for understanding the effect of several surface treatments on the mechanical properties of fiber-reinforced composites. The aim of this paper is to put forth a comprehensive review on the effects of different surface treatments on the mechanical properties such as tensile strength, flexural strength, and impact strength and also interfacial shear strength of the fiber-reinforced composites.
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Lee, Ching Hao, Abdan Khalina, and Seng Hua Lee. "Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review." Polymers 13, no. 3 (January 29, 2021): 438. http://dx.doi.org/10.3390/polym13030438.
Повний текст джерелаАнотація:
Plant fibers have become a highly sought-after material in the recent days as a result of raising environmental awareness and the realization of harmful effects imposed by synthetic fibers. Natural plant fibers have been widely used as fillers in fabricating plant-fibers-reinforced polymer composites. However, owing to the completely opposite nature of the plant fibers and polymer matrix, treatment is often required to enhance the compatibility between these two materials. Interfacial adhesion mechanisms are among the most influential yet seldom discussed factors that affect the physical, mechanical, and thermal properties of the plant-fibers-reinforced polymer composites. Therefore, this review paper expounds the importance of interfacial adhesion condition on the properties of plant-fiber-reinforced polymer composites. The advantages and disadvantages of natural plant fibers are discussed. Four important interface mechanism, namely interdiffusion, electrostatic adhesion, chemical adhesion, and mechanical interlocking are highlighted. In addition, quantifying and analysis techniques of interfacial adhesion condition is demonstrated. Lastly, the importance of interfacial adhesion condition on the performances of the plant fiber polymer composites performances is discussed. It can be seen that the physical and thermal properties as well as flexural strength of the composites are highly dependent on the interfacial adhesion condition.
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Rasheed, Sultana, and Altaf Ahmad Dasti . "Quality and Mechanical Properties of Plant Commercial Fibers." Pakistan Journal of Biological Sciences 6, no. 9 (April 15, 2003): 840–43. http://dx.doi.org/10.3923/pjbs.2003.840.843.
Повний текст джерела
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Juradin, Sandra, Ivica Boko, Ivanka Netinger Grubeša, Dražan Jozić, Silvija Mrakovčić, and Iva Vukojević. "Properties of Spanish Broom Fiber Reinforced Concrete." Solid State Phenomena 322 (August 9, 2021): 72–77. http://dx.doi.org/10.4028/www.scientific.net/ssp.322.72.
Повний текст джерелаАнотація:
Building materials based on renewable resources such as plant fibers are increasingly needed, especially if the plant is local and easily accessible. One such plant is the Spanish broom, a typical shrub of the Mediterranean region. In this work, Spanish broom fibers were used for the first time to reinforce concrete. Four mixtures were made: a reference mixture and three mixtures reinforced with 3 cm long fibers, in the amount of 0.5% of the total volume. Cement CEM I 42.5R, crushed limestone aggregate (D = 16 mm), and tap water were used for all the mixtures and in equal quantities. Four mortar mixtures were also made: standard mortar and 3 fiber-reinforced mortars. The mortar is reinforced with fibers of the same length and quantity as the concrete. The fibers were obtained by maceration of Spanish broom in solutions of 8%, 10%, and 15% NaOH. The quality and mechanical properties of the cellulose fibers depend on the geographical and climatic conditions and the fiber extraction procedures so the aim of this study was to evaluate the influence of different chemical pre-treatments of the fibers on the mechanical properties of the concrete. The properties of the fresh mix were determined using the flow method. Hardened concrete was tested for compressive and flexural strength and dynamic modulus of elasticity. Compressive and flexural strengths were determined on cement mortars. The results obtained on concrete were compared with those obtained on the mortar. It was concluded that the quality of composite materials is more influenced by the quality of the placement than by fiber treatment.
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Franco-Urquiza, Edgar Adrián, Raúl Samir Saleme-Osornio, and Rodrigo Ramírez-Aguilar. "Mechanical Properties of Hybrid Carbonized Plant Fibers Reinforced Bio-Based Epoxy Laminates." Polymers 13, no. 19 (October 7, 2021): 3435. http://dx.doi.org/10.3390/polym13193435.
Повний текст джерелаАнотація:
In this work, henequen and ixlte plant fibers were carbonized in a horizontal quartz tube furnace. Several carbonized and non-carbonized fiber fabric configurations were impregnated with a bio-based epoxy resin through the infuseon process. The infrared spectra revealed characteristic bands of styrene instead of organic compounds, representing that the carbonization procedure was adequate to carbonize the plant fibers. The porosity volume ratio for the non-carbonized henequen laminates showed the highest number of voids >1.9%, and the rest of the composites had a similar void density between 1.2–1.7%. The storage modulus of the non-carbonized and carbonized henequen laminates resulted in 2268.5 MPa and 2092.1 MPa, respectively. The storage modulus of the carbonized ixtle laminates was 1541.4 MPa, which is 37.8% higher than the non-carbonized ixtle laminates and 12% higher than henequen composites. The laminates were subject to thermal shock cycling, and tomography scans revealed no alterations on the porosity level or in the cracks after the cycling procedure. Thermal shock cycling promoted the post-curing effect by increasing the glass transition temperature. The viscoelastic results showed a variation in the storage modulus when the carbonized fiber fabrics were located between natural fiber fabrics, which was attributed to more excellent compaction during the infusion process. Variations in the viscoelastic behavior were observed between the different types of natural fibers, which influenced the mechanical properties.
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Juárez-Alvarado, César A., Camille Magniont, Gilles Escadeillas, Bernardo T. Terán-Torres, Felipe Rosas-Diaz, and Pedro L. Valdez-Tamez. "Sustainable Proposal for Plant-Based Cementitious Composites, Evaluation of Their Mechanical, Durability and Comfort Properties." Sustainability 14, no. 21 (November 3, 2022): 14397. http://dx.doi.org/10.3390/su142114397.
Повний текст джерелаАнотація:
This research evaluates four sustainable cementitious composites with sustainable plant fibers and bio-aggregates: (1) cementitious matrix composite with lechuguilla fibers (LFC) and (2) with flax fibers (FFC); and (3) cementitious matrix composite with wood shavings (WSC) and (4) with hemp shavings (HSC). The fibers are for reinforcement and the shavings act as bio-aggregates as a total replacement for limestone aggregates. The lechuguilla (LF) and flax (FF) fibers were treated; wood (WS) and hemp (HS) bio-aggregates were also processed. Nineteen mixtures were manufactured, and five were used as controls, and the hygrothermal, mechanical, and durability properties were evaluated. The results for LFC and FFC showed that fiber treatment negatively affected flexural–compressive strength; untreated LFC with accelerated deterioration had better mechanical behavior, higher density, and lower porosity than FFC. Strength and density decreased, but porosity increased with increasing fiber volume (Vf). Regarding WSC and HSC, the microstructure of WS and HS had a significant effect on the physical and mechanical properties. The high porosity influenced the results obtained, since it decreased compressive strength and bulk density; however, thermal conductivity, hygroscopicity, and vapor resistance showed better behavior in most cases than the control specimens, i.e., without bio-aggregates.
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Liu, Gongdai, R. Ghosh, A. Vaziri, A. Hossieni, D. Mousanezhad, and H. Nayeb-Hashemi. "Biomimetic composites inspired by venous leaf." Journal of Composite Materials 52, no. 3 (May 25, 2017): 361–72. http://dx.doi.org/10.1177/0021998317707254.
Повний текст джерелаАнотація:
A typical plant leaf can be idealized as a composite having three principal fibers: the central mid-fiber corresponding to the mid-rib, straight parallel secondary fibers attached to the mid-fiber representing the secondary veins, and then another set of parallel fibers emanating from the secondary fibers mimicking the tertiary fibers embedded in a matrix material. This paper introduces a biomimetic composite design inspired by the morphology of venous leafs and investigates the effects of venation morphologies on the in-plane mechanical properties of the biomimetic composites using finite element method. The mechanical properties such as Young’s moduli, Poisson’s ratio, and yield stress under uniaxial loading of the resultant composite structures was studied and the effect of different fiber architectures on these properties was investigated. To this end, two broad types of architectures were used both having similar central main fiber but differing in either having only secondary fibers or additional tertiary fibers. The fiber and matrix volume fractions were kept constant and a comparative parametric study was carried out by varying the inclination of the secondary fibers. The results show that the elastic modulus of composite in the direction of main fiber increases linearly with increasing the angle of the secondary fibers. Furthermore, the elastic modulus is enhanced if the secondary fibers are closed, which mimics composites with closed cellular fibers. In contrast, the elastic modulus of composites normal to the main fiber ( x direction) exponentially decreases with the increase of the angle of the secondary fibers and it is little affected by having secondary fibers closed. Similar results were obtained for the yield stress of the composites. The results also indicate that Poisson’s ratio linearly increases with the secondary fiber angle. The results also show that for a constant fiber volume fraction, addition of various tertiary fibers may not significantly enhance the mechanical properties of the composites. The mechanical properties of the composites are mainly dominated by the secondary fibers. Finally, a simple model was proposed to predict these behaviors.
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de Almeida Mesquita, Ricardo Gabriel, Gustavo H. Denzin Tonoli, Rafael Farinassi Mendes, Antônia Amanda da Silva César, Lina Bufalino, and Lourival Marin Mendes. "Inclusion of Lignocellulosic Fibers in Plastic Composites." Key Engineering Materials 600 (March 2014): 442–46. http://dx.doi.org/10.4028/www.scientific.net/kem.600.442.
Повний текст джерелаАнотація:
Solutions for the production of sustainable plastics have motivated the scientific community to search for new alternatives for the replacement of raw materials from non-renewable sources such as glass fibers. Therefore, plant fibers appear to be a feasible alternative, since they present low cost, suitable mechanical strength, wide availability, as well as are renewable. This work aimed to evaluate the replacement of glass fibers by lignocellulosic fiber in plastic composites used in civil construction sectors. The resin used was ortho unsaturated polyester. Three plant fibers were tested (sugar cane bagasse, eucalypt and pine) with and without chemical modification. The chemical modifications were performed with sodium hydroxide. The composites were evaluated by their physical and mechanical properties. The initial results showed the potential of using plant fiber in the production of fiber-reinforced plastic composites. Keywords: plant fibers, residues, polyester resin
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Nguyen, Tuan Anh, and Thi Huong Nguyen. "Banana Fiber-Reinforced Epoxy Composites: Mechanical Properties and Fire Retardancy." International Journal of Chemical Engineering 2021 (July 22, 2021): 1–9. http://dx.doi.org/10.1155/2021/1973644.
Повний текст джерелаАнотація:
Currently, the growing field of technology has paved the way for using environmental friendly resources; in particular, plant origin holds ecological concern and renewable aspects. Currently, natural fiber composites have widening attention, thanks to their eco-friendly properties. In the present work, the composite material is reinforced with natural fibers from the bark of banana trees (banana fibers), a material available in Vietnam. Banana fibers are extracted from banana peels, pretreated with NaOH 5%, and then cut to an average length of 30 mm. Banana fiber is reinforced for epoxy resin Epikote 240 with mass percents: 10 wt.%, 15 wt.%, 20 wt.%, and 25 wt.%. The results were evaluated through structural morphology (SEM), mechanical properties, fire resistance, and thermal properties. Experimental results show that the tensile, compressive, and impact strengths of biosynthetic materials up to 20% by weight have increased compared to epoxy neat. Flame retardant and thermal properties are kept stable; 20 wt.% banana fiber gives a limiting oxygen index of 20.8% and satisfactory thermal stability.
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Maruyama, Shoma, Hitoshi Takagi, Yoshitoshi Nakamura, Antonio Norio Nakagaito, and Chizuru Sasaki. "Influence of Alkali Treatment on Mechanical Properties of Poly Lactic Acid Bamboo Fiber Green Composites." Advanced Materials Research 1110 (June 2015): 56–59. http://dx.doi.org/10.4028/www.scientific.net/amr.1110.56.
Повний текст джерелаАнотація:
In recent years, in order to reduce the environmental burden of composite materials, research has been conducted to develop composites made from plant-derived polymers and natural fibers, the so called green composites. In this study, green composites were made from polylactic acid (PLA), a bioplastic derived from corn starch, reinforced with bamboo fibers. The composites were manufactured by mixing short bamboo fibers and dispersion-type PLA resin. Subsequently, PLA/bamboo fiber sheets were molded by a hot pressing method. In order to improve the adhesion at the matrix/fiber interface and to obtain uniformly dispersed bamboo fibers in PLA matrix, the bamboo fibers were treated by alkali solution. It was found that the composites reinforced by alkali-treated bamboo fibers have higher strength than those based on untreated ones. Bamboo fibers were uniformly dispersed in PLA matrix with improved interfacial adhesion as lignin in bamboo fibers were removed by the alkali treatment. It was concluded that alkali treatment was an effective method for improvement of interfacial matrix/fiber adhesion in PLA/bamboo fiber-reinforced green composites.
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Uğraşkan, Volkan, Abdullah Toraman, and A. Binnaz Hazar Yoruç. "Natural Fiber Reinforced Synthetic Polymer Composites." Diffusion Foundations 23 (August 2019): 6–30. http://dx.doi.org/10.4028/www.scientific.net/df.23.6.
Повний текст джерелаАнотація:
In early composite materials, the use of petroleum based fibers such as glass and carbon fibers, aramid etc. was common. In order to reduce the dependency on petroleum based sources and environmental pollution, researchers have focused on the search for alternative sources. Natural fibers are abundant, recyclable and biodegradable plant derived materials. Besides, thanks to good physical, thermal and mechanical properties, natural fibers become promising alternative for composites. This review includes information about natural fiber reinforced composites’ components, manufacturing methods, mechanical properties and applications.
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Wang, Jiankang, Zhijian Li, and Hongwei Lu. "Current Research and Patents of Plant Fiber Composites." Recent Patents on Mechanical Engineering 12, no. 1 (February 20, 2019): 37–44. http://dx.doi.org/10.2174/2212797611666181119105203.
Повний текст джерелаАнотація:
Background: With the improvement of environment protection awareness, human beings have gradually become aware of that the plastic products, waste are harmful to the human living environment. Therefore, research and application of biodegradable materials that do not rely on petroleum resources have become hot topics. Researchers have accelerated the development and promotion of plant fiber because they are good flexibility, relatively rough surface and biodegradable. Objective: The development of plant fiber composites is reviewed, including composition ratio, interfacial modification, processing technology, and the effects of these technologies on the properties of plant fiber composites. Methods: The paper reviews various patents and research developments about plant fiber composite materials. It also analyzes the advantages and disadvantages of various patents and technologies from the aspects of biodegradable ability, mechanical properties, dispersing performance, processing properties, cost, and so on. Results: The component proportion, interface modification, and processing technology of plant fiber composite materials are prospected to improve the quality and application of the plant fiber composite materials in the future development. Conclusion: The considerable attention has been paid on the technology of biodegradable plant fiber composite. The recent patents and technologies have shown us a wider application in biodegradable plant fiber composite. The problems how to improve the mechanical properties of plant fibers, the dispersion properties of plant fibers and resins, and the processing properties of composite materials, will need more and more methods and equipment to solve or simplify.
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Bobek, Jiří, Petr Lenfeld, Jiří Habr, Martin Seidl, and Luboš Běhálek. "New Silane and MAPP Coupling Agents as Natural Composites Production Systems Improvement." Key Engineering Materials 669 (October 2015): 52–59. http://dx.doi.org/10.4028/www.scientific.net/kem.669.52.
Повний текст джерелаАнотація:
Still more and more applications using synthetic polymers find new material alternative in materials based on synthetic polymer filled with nature fibers mainly plant fibers. Not only in common applications but also in technical applications is possible to use nature fiber composites. But some additional modifications are necessary to perform to gain properties possible to use in technical applications. Mainly increasing adhesion between matrix and fibers is the most common intent of these additional operations. This paper deals with maleic anhydride based coupling agent and silane coupling agent effect in the polypropylene matrix and jute fiber composite and its mechanical properties. By using of silane coupling agents was achieved mechanical properties which are possible to compare with composites with glass fibers mechanical properties mainly in case of the flexural and tensile modulus and mainly was gained significant increasing of composite production system stability.
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Ivanova, Ivelina, Jules Assih, and Dimitar Dontchev. "Investigation of the Mechanical Behavior of Natural Vegetable Fibers Used in Composite Materials for Structural Strengthening." Key Engineering Materials 888 (June 9, 2021): 15–21. http://dx.doi.org/10.4028/www.scientific.net/kem.888.15.
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This research aims at studying the mechanical properties of industrial hemp fibers and promoting their use as a reinforcing composite material for strengthening of civil engineering structures. Natural hemp fibers are of great interest due to the following advantages they have: low cost, high strength-to-weight ratio, low density and non-corrosive properties. The use of plant fiber composite materials has increased significantly in recent years because of the negative reduction impact on the environment. For example, the tendency to use renewable resources and their possibility for recycling. They cause fewer health and environmental problems than synthetic fibers. Natural fibers, in addition to environmental aspects, have advantages such as low densities, i.e. have low weight, interesting mechanical properties comparable to those of synthetic fiber materials, and last but not least, low cost. Composites based on natural plant fibers can be used to reinforce or repair reinforced concrete structures, as shown by research on flax fiber composites. These concretes specimens strengthened with biocomposite materials have very good resistance to bending and significantly increase the rigidity of the structure. The results show that the hemp fiber reinforcement has significant effects on the strengthening and increase in flexural strength from 8% to 35 %.
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K, Sakthi Vadivel, Vigneshwaran K, and Sivaraj C. "Study on The Mechanical Properties of Roselle Fiber and Palm Seed Powder Reinforced Epoxy Hybrid Composite." Journal of Manufacturing Engineering 16, no. 1 (March 1, 2021): 001–6. http://dx.doi.org/10.37255/jme.v16i1pp001-006.
Повний текст джерелаАнотація:
Recently, due to increasing environmental concerns, scientists and researchers have been replacing synthetic fibers with natural fibers as the main component in composites. Roselle is one suitable natural fiber. The plant’s history, physical description, cultural methods, and usages were explained to further understand this potential plant. It is clear that extensive research has been performed on the fiber extraction methods, properties, and possible surface treatments of Roselle fibers to enhance its properties in the manufacturing of natural-fiber-reinforced polymer composites.Also Epoxy hybrid Palm Seed powder with Roselle fiber to strengthen the materials; however, no review has covered the properties and applications of Roselle fibers and palm seed powders in detail. Thus we have investigated Tensile, Impact, Flexural and Water absorption test of Roselle fiber and Palm Seed powder composite. Therefore, a study was performed on Roselle fiber to determine its potential to enable a better selection of materials to produce composites for potential applications in the construction and building, automotive, and aerospace industries.
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Köhler, Robert, Marvin Jurisch, Aaron Kilian Mayer, Carsten Mai, and Wolfgang Viöl. "Loofah Sandwich Panels: The Effect of Adhesive Content on Mechanical and Physical Properties." Materials 15, no. 20 (October 13, 2022): 7129. http://dx.doi.org/10.3390/ma15207129.
Повний текст джерелаАнотація:
In the development of new materials, the focus nowadays is increasingly on their relevance with regard to lightweight construction or environmental compatibility. The idea of a lightweight sandwich panel was inspired by an increasing number of cosmetic accessories that use the fibers of the loofah plant, a rapidly renewable, light, fibrous raw material. The aim of the study was to develop a fiber composite panel based on the fibers of the loofah plant (Luffa cylindrica) as core material and wooden veneer as the skin layer to be used in areas of lead construction. Three different panel variations were produced for the tests, with a fiber–adhesive ratio between 1:1.05, 1:0.8, and 1:0.5. The mechanical strength (flexural strength and internal bond) and the physical properties (density and thickness swelling) were determined as a function of the fiber–adhesive composition. The results show that the flexural strength increased by approx. 400% and the thickness swelling was reduced by 10% with increasing adhesive quantity.
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Benkharbeche, Houria, Mansour Rokbi, Zine El Abidine Rahmouni, Moustapha Ghebouli, Madani Grine, and Brahim Baali. "Effect of Fibers Orientation on the Fracture of Polymer Concrete Based on Quartz, Polyester and Jute Fabrics." Defect and Diffusion Forum 406 (January 2021): 511–20. http://dx.doi.org/10.4028/www.scientific.net/ddf.406.511.
Повний текст джерелаАнотація:
The main objective of this work is to highlight the influence of jute woven layer orientation on fracture parameters (energy release rate and stress intensity factor) of a polymer concrete laminate. The use of plant fibers, jute in this study, as reinforcements outside the polymer concrete, acquires mechanical properties, traction, and flexion, more than appreciable, however, other characteristics must be studied to ensure better integration on the market. The addition of plant fibers with different orientations is not without consequences on the mechanical behavior, in this case, on the resistance to cracking and its propagation. Fibered concretes have a very different behavior compared to non-fiber concretes, especially after the first cracking, where the fibers make their contribution by trying to stop the evolution and the propagation of micro-cracks within the matrix by making the concrete more ductile.
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Benkharbeche, Houria, Mansour Rokbi, Zine El Abidine Rahmouni, Moustapha Ghebouli, Madani Grine, and Brahim Baali. "Effect of Fibers Orientation on the Fracture of Polymer Concrete Based on Quartz, Polyester and Jute Fabrics." Defect and Diffusion Forum 406 (January 2021): 511–20. http://dx.doi.org/10.4028/www.scientific.net/ddf.406.511.
Повний текст джерелаАнотація:
The main objective of this work is to highlight the influence of jute woven layer orientation on fracture parameters (energy release rate and stress intensity factor) of a polymer concrete laminate. The use of plant fibers, jute in this study, as reinforcements outside the polymer concrete, acquires mechanical properties, traction, and flexion, more than appreciable, however, other characteristics must be studied to ensure better integration on the market. The addition of plant fibers with different orientations is not without consequences on the mechanical behavior, in this case, on the resistance to cracking and its propagation. Fibered concretes have a very different behavior compared to non-fiber concretes, especially after the first cracking, where the fibers make their contribution by trying to stop the evolution and the propagation of micro-cracks within the matrix by making the concrete more ductile.
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Torokhov, Valerii G., Dilyus I. Chukov, Victor V. Tcherdyntsev, Galal Sherif, Mikhail Y. Zadorozhnyy, Andrey A. Stepashkin, Ilya I. Larin, and Elena V. Medvedeva. "Mechanical and Thermophysical Properties of Carbon Fiber-Reinforced Polyethersulfone." Polymers 14, no. 14 (July 21, 2022): 2956. http://dx.doi.org/10.3390/polym14142956.
Повний текст джерелаАнотація:
In this study, the mechanical and thermophysical properties of carbon fiber-reinforced polyethersulfone are investigated. To enhance the interfacial interaction between carbon fibers and the polymer matrix, the surface modification of carbon fibers by thermal oxidation is conducted. By means of AFM and X-ray spectroscopy, it is determined that surface modification changes the morphology and chemical composition of carbon fibers. It is shown that surface modification dramatically increases the mechanical properties of the composites. Thus, flexural strength and the E-modulus of the composites reinforced with modified fibers reached approximately 962 MPa and 60 GPa, respectively, compared with approximately 600 MPa and 50 GPa for the composites reinforced with the initial ones. The heat deflection temperatures of the composites reinforced with the initial and modified fibers were measured. It is shown that composites reinforced with modified fibers lose their stability at temperatures of about 211 °C, which correlates with the glass transition temperature of the PES matrix. The thermal conductivity of the composites with different fiber content is investigated in two directions: in-plane and transverse to layers of carbon fibers. The obtained composites had a relatively high realization of the thermal conductive properties of carbon fibers, up to 55–60%.
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Fan, Li Shan, Shu Dong Wang, and Pei Qin. "The Structure and Properties of the Degummed Kosteletzkya virginica Bast Fiber." Advanced Materials Research 236-238 (May 2011): 346–56. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.346.
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In this paper, the bast fibers of theKosteletzkya virginicawere degummed and separated into fine fibers, the chemical composition, morphology, microstructure and mechanical properties of the degummedKosteletzkya virginicabast fibers were characterized by means of SEM, ART-FTIR, DSC-TGA, XRD and Instron tensile tester. The results showed that the surface of theKosteletzkya virginicabast fibers was smooth, and there were many visible grooves along the vertical section. Typical celluloseⅠin theKosteletzkya virginicabast fibers was confirmed by FTIR and XRD analysis.The crystallinity of theKosteletzkya virginicabast fibers was higher than the cotton fibers and lower than the castor-oil plant bast fibers. The beginning and maximum decomposition temperature of theKosteletzkya virginicabast fibers were 252 and 347 °C respectively, which indicated that theKosteletzkya virginicabast fibers had an appropriate thermal stability. TheKosteletzkya virginicabast fibers had a better mechanical properties and excellent hygroscopicity. All the results showed that theKosteletzkya virginicabast fiber was one of an ideal candidate for the new textile material.
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Manickavasagam, V. M., B. Vijaya Ramnath, C. Elanchezhian, J. Jenish, S. Jayavel, and V. Muthukumar. "Investigation on Impact and Compression Properties of Pineapple Reinforced Polymer Composite." Applied Mechanics and Materials 591 (July 2014): 116–19. http://dx.doi.org/10.4028/www.scientific.net/amm.591.116.
Повний текст джерелаАнотація:
The Natural fiber composites form a combination of plant derived fibers with plastic binders (Polymer matrices). The fibers form the fillers or reinforcements of the composite and the matrix is the continuous phase. In general, fibers are principal load carrying members while the surrounding matrix keeps them in the desired position, acts as a load transfer medium between them. So fibers with good strength and modulus and having good bonding with matrix should be used to a produce a good quality composite material [1-3]. The mechanical efficiency of a fiber composite depends on the adhesion between the matrix and the reinforcement [4-7]. This paper is to evaluate impact and compression properties of pineapple fiber based reinforced composite with epoxy resin as matrix.
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Arivendan, Ajithram, Winowlin Jappes J T, Siva Irulappasamy, and Brintha N Chris. "Water hyacinth (EichhorniaCrassipes) polymer composites properties - aquatic waste into successful commercial product." Metallurgical and Materials Engineering 28, no. 1 (March 25, 2022): 157–69. http://dx.doi.org/10.30544/752.
Повний текст джерелаАнотація:
In modern times, the demand for natural fibers is increased due to low density, low cost, recyclability, and biodegradable properties. Following work deals with the aquatic waste of water hyacinth plant fiber. The main intent of this work is to utilize the hyacinth plant into a successive manner and convert this plant into some commercial products. It is used as reinforcement material and epoxy polymer resin in matrix material with a suitable percentage of hardener (10:1). A new method such as a mechanical way of extraction process is introduced in this work. The different weight percentage of the hyacinth fiber is reinforced with matrix material like 15, 20, 25, 30, and 35%. With the help of a compression molding, machine water hyacinth reinforced fiber composite is produced by using 1500 PSI pressure and 110 °C, 100 °C of upper and lower plate temperature. A composite sample is cut into as per ASTM standards and the mechanical tests like tensile, flexural, impact test is conducted by using universal testing machine (UTM), and Charpy impact test machine. Based on the final mechanical test results, the 30% of hyacinth composite sample tensile 36.48 MPa, flexural 48.62 MPa, impact 0.5 J, and hardness 98 attained then, the hyacinth composite samples are adopted into water and chemical absorption test with 10 hours, 1week, 1month of continuous monitoring. Based on the final results, hyacinth fiber is strongly recommended to use an alternative of synthetic fibers and conventional natural fibers. The hyacinth composite is strongly recommended for the usage of commercial and household applications.
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Nurul Aimi Nadia Ibrahim, Mohamad Awang, and Suriani Mat Jusoh. "An Investigation of Kenaf Plant Fibers as Reinforcements in Interwoven Kenaf/Polyethylene Terephthalate (Pet)/Epoxy Hybrid Green Composites." Universiti Malaysia Terengganu Journal of Undergraduate Research 2, no. 2 (April 30, 2020): 23–32. http://dx.doi.org/10.46754/umtjur.v2i2.110.
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Renewable materials have some bearing on the environment and have since increased research works related to polymer composites. This work was conducted to investigate the effects of interwoven kenaf fibers and the use of kenaf fibers in composites. In this research, interwoven between kenaf and polyethylene terephthalate (PET) was prepared and epoxy was used as the polymer matrix to form composites. The kenaf fiber composites with various kenaf fiber contents (2, 5, 8, and 10 wt %) interwoven with (PET) fibers were prepared by using open mould method. The properties of kenaf/PET/epoxy composites (KPTE) were studied. The kenaf fiber composites characterization was determined based on their mechanical properties, water absorption, morphology and thermal properties. The tensile strength test was performed using Testometric machine. The finding shows that the strength increases as the amount of kenaf fibers in the composites increases. The composites with 10% kenaf fibers interwoven PET displayed the highest tensile strength (85.3 ± 2.9 MPa) while unfilled epoxy show the lowest tensile strength (64.1 ± 16.5 MPa). The addition of kenaf fibers minimally increases the water absorption up to about 1.4%. The increases of kenaf fibers also reduces the overall thermal stability of the composites compared to the PET and epoxy resin composites. The morphology properties of KPTE composites support the tensile properties surface of the composites. This study assists to propose the kenaf fibers as a potential filler for properties improvements in epoxy-based composites contributing to the development of another environment-friendly material.
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Hamad, Sameer F., Nicola Stehling, Simon A. Hayes, Joel P. Foreman, and C. Rodenburg. "Exploiting Plasma Exposed, Natural Surface Nanostructures in Ramie Fibers for Polymer Composite Applications." Materials 12, no. 10 (May 18, 2019): 1631. http://dx.doi.org/10.3390/ma12101631.
Повний текст джерелаАнотація:
Nanoscale surface morphology of plant fibers has important implications for the interfacial bonding in fiber-polymer composites. In this study, we investigated and quantified the effect of plasma-surface modification on ramie plant fibers as a potential tool for simple and efficient surface modification. The extensive investigation of the effects of plasma treatment of the fiber surface nano-morphology and its effect on the fiber-polymer interface was performed by Low-Voltages Scanning Electron Microscopy (LV-SEM), infrared spectroscopy (FT-IR) analysis, fiber-resin angle measurements and mechanical (tensile) testing. The LV-SEM imaging of uncoated plasma treated fibers reveals nanostructures such as microfibrils and elementary fibrils and their importance for fiber mechanical properties, fiber wettability, and fiber-polymer matrix interlocking which all peak at short plasma treatment times. Thus, such treatment can be an effective in modifying the fiber surface characteristics and fiber-polymer matrix interlocking favorably for composite applications.
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Santha, Rao D., and Murthy O. Gopala Krishna. "Evaluation of Mechanical and Micro Structural Properties of Natural Fiber Reinforced Polymer Composites." Materials Science Forum 1065 (June 30, 2022): 69–77. http://dx.doi.org/10.4028/p-9h31n5.
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Now- a- days the polymers are frequently used in domestic and industrial purposes. The properties of polymer composites are somewhat inferior and may be improved with the addition of filler and fiber materials. Jute is one of most economical natural fibres and is obtained primarily from plant materials such as cellulose and Lignin. Sisal is a vegetable, natural, fully biodegradable fibre and which has good specific strength and stiffness and is used for making ropes and twines. The banana fibre is the strongest natural fibres and is made from the stem of the banana tree which. exhibits good tensile strength and incredibly durable and bio-degradable. An attempt is made to improve the properties of polymer composites using jute, sisal and banana fibers and addition of 2 % titanium di boride as filler material. The polymer composites were made by hand layup method with epoxy as matrix material. The mechanical properties of fabricated composites such as tensile and impact strength, hardness were evaluated as per ASTM standards. It is found that tensile strength, hardness and impact strength were improved with the addition of fibers and filler material. The micro structural evaluation is also carried out using scanning electron microscope and found that particles were dispersed in the matrix material.
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Balaji, N., S. Balasubramani, T. Ramakrishnan, and Y. Sureshbabu. "Experimental Investigation of Chemical and Tensile Properties of Sansevieria Cylindrica Fiber Composites." Materials Science Forum 979 (March 2020): 58–62. http://dx.doi.org/10.4028/www.scientific.net/msf.979.58.
Повний текст джерелаАнотація:
The natural fiber reinforced composites are least expensive material and alternative material of wood, plastic material for the construction and industrial applications. The polymer based composites are used to fabricate the automobile components. The present investigation the composite materials reinforced with sansevieria cylindrica fibers were fabricated. These fibers were used because of their impressive mechanical properties. The composite panels are fabricated by hand lay-up technique. Sansevieria cylindrica fibers and polyester resin to produce the composite material. Sansevieria cylindrica plant has each leaf 20 to 30mm thickness and height 1000 to 2000mm approximately. The chemical tests of fiber and tensile strength for different fiber length composites such as 10mm, 20mm, 30mm, 40mm, & 50mm are determined.
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Barcelos, Mariana Azevedo, Noan Tonini Simonassi, Frederico Muylaert Margem, Fabio de Oliveira Braga, and Sergio Neves Monteiro. "Under Pressure Processed Polyester Composites with High Amount of Curaua Fibers for Improved Tensile Properties." Materials Science Forum 869 (August 2016): 255–59. http://dx.doi.org/10.4028/www.scientific.net/msf.869.255.
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Polymeric composites incorporated with natural fibers are today being used in many applications that include engineering components, for example, in the automobile industry. Among the many natural fibers, the one extracted from the curaua plant was found to be a strong reinforcing material for polymer composites. Attempts have been made to obtain stronger composites reinforced with curaua fibers. In the present work, the tensile properties of polyester matrix composites reinforced with different amounts of curaua fibers were evaluated. Composites prepared under pressure and reinforced with up to 60% in volume of long, continuous and aligned curaua fibers were tensile tested. The results showed a significant increase in the mechanical properties with the amount of curaua fiber. Those properties were found to be significantly higher as compared with other bend-tested curaua fiber composites results.
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Amin, Muhammad Nasir, Waqas Ahmad, Kaffayatullah Khan, and Ayaz Ahmad. "A Comprehensive Review of Types, Properties, Treatment Methods and Application of Plant Fibers in Construction and Building Materials." Materials 15, no. 12 (June 20, 2022): 4362. http://dx.doi.org/10.3390/ma15124362.
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Sustainable development involves the usage of alternative sustainable materials in order to sustain the excessive depletion of natural resources. Plant fibers, as a “green” material, are progressively gaining the attention of various researchers in the field of construction for their potential use in composites for stepping towards sustainable development. This study aims to provide a scientometric review of the summarized background of plant fibers and their applications as construction and building materials. Studies from the past two decades are summarized. Quantitative assessment of research progress is made by using connections and maps between bibliometric data that are compiled for the analysis of plant fibers using Scopus. Data refinement techniques are also used. Plant fibers are potentially used to enhance the mechanical properties of a composite. It is revealed from the literature that plant-fiber-reinforced composites have comparable properties in comparison to composites reinforced with artificial/steel fibers for civil engineering applications, such as construction materials, bridge piers, canal linings, soil reinforcement, pavements, acoustic treatment, insulation materials, etc. However, the biodegradable nature of plant fibers is still a hindrance to their application as a structural material. For this purpose, different surface and chemical treatment methods have been proposed in past studies to improve their durability. It can be surmised from the gathered data that the compressive and flexural strengths of plant-fiber-reinforced cementitious composites are increased by up to 43% and 67%, respectively, with respect to a reference composite. In the literature, alkaline treatment has been reported as an effective and economical method for treating plant fibers. Environmental degradation due to excessive consumption of natural resources and fossil fuels for the construction industry, along with the burning of waste plant fibers, can be reduced by incorporating said fibers in cementitious composites to reduce landfill pollution and, ultimately, achieve sustainable development.
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Andersons, Janis, and E. Spārniņš. "The Effect of Damage and Geometrical Variability on the Tensile Strength Distribution of Flax Fibers." Key Engineering Materials 452-453 (November 2010): 137–40. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.137.
Повний текст джерелаАнотація:
Natural fibers of plant origin are finding non-traditional applications as reinforcement of composite materials. The mechanical properties of fibers exhibit considerable scatter, being affected by the natural variability in plant as well as the damage accumulated during processing. For bast fibers, the primary damage mode is kink bands – zones of misaligned cellulose microfibrils extending across the fiber and oriented roughly perpendicularly to its axis. Another feature typical for natural fibers and contributing to the scatter of fiber strength is the variability of diameter along a fiber length and among the fibers. An analytical expression for the distribution of the longitudinal tensile strength of bast fibers has been derived, accounting for the strength variability of intact fibers and the effect of kink bands. Upon determining the relevant parameters from fiber damage and geometry characteristics by means of optical microscopy, the theoretical strength distribution function has been found to agree reasonably well with the test results of elementary flax fibers.
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Velusamy, K., P. Navaneethakrishnan, Vendan S. Arungalai, and Kumar K. Saravana. "Experimental Investigations to Evaluate the Mechanical Properties and Behavior of Raw and Alkali Treated King’s Crown (Calotropis Gigantea) Fiber to be Employed for Fabricating Fiber Composite." Applied Mechanics and Materials 598 (July 2014): 73–77. http://dx.doi.org/10.4028/www.scientific.net/amm.598.73.
Повний текст джерелаАнотація:
A fiber extracted from King’s crown plant belonging to apoceynaceal family is a budding component identified for potential use in composites. It is imperative to evaluate the parametric and property based features to determine its suitability. This study focuses on evaluating the properties/ behavior of raw fibers and fibers treated with various concentrations of NaOH. Considering the possible application of the fiber composites, the aptness of these fibers are examined with respect to their physical, mechanical, thermal and chemical properties. The outcome of the analysis emphasizes that the fibers treated with NaOH outperforms the raw fibers in terms of its tensile strength. Added to this, the fibers treated with NaOH have maximum cellulose and minimum wax content, thereby exhibiting their superior chemical stability. Further, the thermal analysis clearly indicates that the temperature peak shifts to a higher region in the treated fiber compared to raw fiber.
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Hassan Nensok, Mohammed, Md Azree Othuman Mydin, and Hanizam Awang. "Optimization of mechanical properties of cellular lightweight concrete with alkali treated banana fiber." Revista de la construcción 20, no. 3 (2021): 491–511. http://dx.doi.org/10.7764/rdlc.20.3.491.
Повний текст джерелаАнотація:
Recent advancements in construction materials development have involved the utilization of plant-based natural fibers such as kenaf, sisal, coir and banana to replace conventional fibers such as carbon, steel, polypropylene and aramid. However, the main issue with using these fibers is the alkaline cement matrix's durability and compatibility due to high water absorption. Hence, this research focuses on the use of alkali treatment of banana fibers to enhance the mechanical properties of cellular lightweight concrete (CLC). Banana fibers were subjected to 2%, 4%, 6%, 8%, and 10% NaOH treatment before being included in 1200 kg/m3 density CLC. Plain CLC and untreated fiber composites (0% NaOH treatment) were used as the control. Results from the study indicate that compared to the untreated fibre composites and plain control CLC at 28 days, compressive, flexural and splitting tensile strengths increased simultaneously with 6% NaOH fibre treatment to peaks of 40.6% and 59.8%, 63.8% and 117.4%, and 77.4% and 157.8% respectively. The 6% NaOH treatment of BF tremendously improved the mechanical characteristics of single fibers and BFRCLC composites. It is therefore concluded that 6% NaOH treatment of banana fibre was the optimum percentage alkali treatment for use in CLC.
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Jagadeesh, V., K. Venkatasubbaiah, and A. Lakshumu Naidu. "Experimental study on mechanical behavior of natural hybrid composites filled with ground nut shell ash." Mechanics and Mechanical Engineering 23, no. 1 (July 10, 2019): 218–27. http://dx.doi.org/10.2478/mme-2019-0029.
Повний текст джерелаАнотація:
AbstractNowadays, natural fiber reinforced polymer composites are widely used because of their advantageous properties like minimum density, maximum specific strength, low cost and easy availability. Manufacturing of natural fiber composite is easy as compared to the conventional methods. In the present scenario, due to an increasing interest in environmental consciousness with greenhouse effect, various industries have initiated the use of eco-friendly materials and are replacing hazardous materials with such eco-friendly materials. The present work aims to determine the tensile strength of okra and jute fibers reinforced in Epoxy LY-556 and XIN-100IN Resins. Okra fibers are developed from the stem of the plant of the Malvaceae family. Their use as reinforcement in polymer composites requires the basic knowledge of their mechanical properties. Jute fibers are developed from the best jute plants. The conclusions are based on their mechanical properties and behavior.
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Hajba, Sándor, Tibor Czigány, and Tamás Tábi. "Development of Cellulose-Reinforced Poly(Lactic Acid) (PLA) for Engineering Applications." Materials Science Forum 812 (February 2015): 59–64. http://dx.doi.org/10.4028/www.scientific.net/msf.812.59.
Повний текст джерелаАнотація:
The renewable resource based polymers and composites, especially the Poly (Lactic Acid) (PLA) and natural, plant fiber reinforced composites are one of the most important research fields of biocomposites. Due to the mechanical properties of PLA, it stands out of the other biodegradable polymers, but in order to be able to use PLA in engineering application, reinforcing of PLA is needed. PLA can be reinforced with natural plant fibers, however their high moisture content can degrade PLA through hydrolysis during processing of PLA and the fibers into biocomposites. In this paper the effect of pre-process drying was analyzed on the mechanical properties of 30 weight% flax, cotton, and jute fabric reinforced PLA biocomposites. The results of pre-process drying tests showed that the optimum drying temperature was 100°C for the PLA and 120°C for the plant fabrics. It was demonstrated that the drying temperature of PLA and the fabrics has significant effect on the mechanical properties of the biocomposites.
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Badagliacco, Dionisio, Carmelo Sanfilippo, Bartolomeo Megna, Tommaso La Mantia, and Antonino Valenza. "Mechanical and Thermal Properties of Insulating Sustainable Mortars with Ampelodesmos mauritanicus and Pennisetum setaceum Plants as Aggregates." Applied Sciences 11, no. 13 (June 25, 2021): 5910. http://dx.doi.org/10.3390/app11135910.
Повний текст джерелаАнотація:
The use of natural fibers in cement composites is a widening research field as their application can enhance the mechanical and thermal behavior of cement mortars and limit their carbon footprint. In this paper, two different wild grasses, i.e., Ampelodesmos mauritanicus, also called diss, and Pennisetum setaceum, also known as crimson fountaingrass, are used as a source of natural aggregates for cement mortars. The main purpose is to assess the possibility of using the more invasive crimson fountaingrass in place of diss in cement-based vegetable concrete. The two plant fibers have been characterized by means of scanning electron microscopy (SEM), helium picnometry and thermogravimetric analysis. Moreover, the thermal conductivity of fiber panels has been measured. Mortars samples have been prepared using untreated, boiled and Polyethylene glycol 4000 (PEG) treated fibers. The mechanical characterization has been performed by means of three point bending and compression tests. Thermal conductivity and porosity have been measured to characterize physical modification induced by fibers’ treatments. The results showed better thermal and mechanical properties of diss fiber composites than fountaingrass one and that fiber treatments lead to a reduction of the thermal insulation properties.
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Aizi, Djamel-Eddine, and Meriem Kaid-Harche. "Mechanical Behavior of Gypsum Composites Reinforced with Retama monosperma Fibers." Proceedings 63, no. 1 (December 22, 2020): 40. http://dx.doi.org/10.3390/proceedings2020063040.
Повний текст джерелаАнотація:
In this pioneering study, Retama monosperma fibers were used in the preparation of a plaster composite dedicated to the field of civil engineering in order to find a substitute for fiberglass as a reinforcement material. Retama monosperma (Rtam) is one of the plant species abundantly available in Mediterranean regions. The localization of fibers at the organic level, the extraction procedure, physical and mechanical properties were studied to compare them with other vegetable fibers currently used in the manufacture of biocomposites. The results obtained show the possibility of improving the mechanical properties of plaster by using the fibers of Retama monosperma. The purpose of this paper is to promote the fibers of Retama monosperma as a building material in civil engineering in order to boost researchers’ interests in this Mediterranean plant.
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Ponnu Krishnan, P., and J. Selwin Rajadurai. "Microscopical, physico-chemical, mineralogical, and mechanical characterization of Sansevieria zeylanica fibers as potential reinforcement of composite structures." Journal of Composite Materials 51, no. 6 (July 28, 2016): 811–29. http://dx.doi.org/10.1177/0021998316653461.
Повний текст джерелаАнотація:
The aim of this article is to examine for the first time the morphological, physical, chemical, mechanical, and thermal properties of a new kind of fibers, extracted from the leaves of a plant of the Asparagaceae family, to make it possible to use them as potential reinforcement for composite structures. The fibers were extracted from the leaves of Sansevieria zeylanica by decortication process. The presence of mechanical fibers and ribbon fibers were identified through the anatomy of Sansevieria zeylanica leaves. The hierarchical cell structure of these fibers was analyzed through polarized optical microscopy and scanning electron microscopy. It consists of primary cell wall, secondary cell wall, fiber lumen, and middle lamellae. The chemical composition of the natural fibers, in terms of cellulose 76.12%, hemicelluloses 9.32%, lignin 4.28%, and ash content 1.36%, was analyzed by using standard test methods and compared with other natural fibers. The fiber density and fineness were found to be 0.945 ± 0.004 g/cm3 and 8.35 tex, respectively. The thermal behavior of the fiber was investigated through thermogravimetric analysis/differential thermogravimetric analysis. The initial degradation temperature of the cellulose component is 304℃. The results obtained through Fourier transform infrared spectroscopy and X-ray diffraction showed the presence of cellulose with the crystallinity index of 66.67%. Finally, single fiber tensile tests have been performed to assess the mechanical properties. Tensile test of Sansevieria zeylanica fibers showed the tensile strength of 359 MPa and Youngs modulus of 8 GPa.
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Dessie, Esubalew, Tamrat Tesfaye, Rotich Kipchirchir Gideon, Melkie Getnet Tadesse, and Yiping Qiu. "The Influence of Location along the Pseudostem on Enset Fiber Physio-Mechanical Properties: Application of Weibull Distribution Statistics." Applied Sciences 12, no. 14 (July 21, 2022): 7323. http://dx.doi.org/10.3390/app12147323.
Повний текст джерелаАнотація:
Enset bundle fibers were divided lengthwise into four sections from bottom to top and the sections’ physio-mechanical parameters were studied and compared. The four equal fiber sections from the bottom were 0–375 mm (EV-I), 375–750 mm (EV-II), 750 mm–1125 mm (EV-III), and 1125–1500 mm (EV-IV). The mass distribution, cross-sectional area, linear density, and diameter all decreased along the fiber sections from bottom to top. The CIE Lab-color values of each fiber section were also examined, and the L* value for EV-II fiber section was higher. In terms of mechanical properties, the Enset bundle fiber’s tensile strength and work of rupture were analyzed, and both increased by 25% from the lower fiber section to the second fiber section (EV-1 to EV-II) along the length before decreasing significantly at the top sections. The investigation indicated that a higher Weibull modulus and tensile strength characteristics for EV-II were recorded while a low Weibull modulus and low strength characteristics of the Enset bundle fiber section EV-IV were observed. The investigation of Weibull distribution variability in the EV-IV fiber location was also confirmed using one-way ANOVA. Overall, the present study investigates the impact of fiber position along the plant stem on the mechanical and physical properties of Enset bundle fibers which can be used as an input for the optimization of unidirectional composites.
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Nakagaito, Antonio Norio, Hitoshi Takagi, and Yusuke Katsumoto. "Fabrication of strong macrofibers from plant fiber bundles." International Journal of Modern Physics B 35, no. 14n16 (April 30, 2021): 2140005. http://dx.doi.org/10.1142/s0217979221400051.
Повний текст джерелаАнотація:
The production of long cellulose macrofibers starting from nanofibers is still complex and expensive. This study proposes a method of manufacturing long macrofibers from plant fiber bundles by chemically extracting non-cellulosic substances but preserving the original shape of the fibers. Once the cellulosic fiber bundles are dried, the original cellulose nanofibers are bridged to neighboring nanofibers by the formation of hydrogen bonds, giving shape stability and enhanced mechanical properties. By the process, the tensile strength was increased by about 50% and the modulus doubled from the original plant fiber bundles.