Relevant bibliographies by topics / Polymer nanocomposites

Academic literature on the topic 'Polymer nanocomposites'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Polymer nanocomposites.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Polymer nanocomposites"

1

Shamsuri, Ahmad Adlie, and Siti Nurul Ain Md. Jamil. "A Short Review on the Effect of Surfactants on the Mechanico-Thermal Properties of Polymer Nanocomposites." Applied Sciences 10, no. 14 (July 16, 2020): 4867. http://dx.doi.org/10.3390/app10144867.

Full text
Abstract:
The recent growth of nanotechnology consciousness has enhanced the attention of researchers on the utilization of polymer nanocomposites. Nanocomposite have widely been made by using synthetic, natural, biosynthetic, and synthetic biodegradable polymers with nanofillers. Nanofillers are normally modified with surfactants for increasing the mechanico-thermal properties of the nanocomposites. In this short review, two types of polymer nanocomposites modified by surfactants are classified, specifically surfactant-modified inorganic nanofiller/polymer nanocomposites and surfactant-modified organic nanofiller/polymer nanocomposites. Moreover, three types of surfactants, specifically non-ionic, anionic, and cationic surfactants that are frequently used to modify the nanofillers of polymer nanocomposites are also described. The effect of surfactants on mechanico-thermal properties of the nanocomposites is shortly reviewed. This review will capture the interest of polymer composite researchers and encourage the further enhancement of new theories in this research field.
APA, Harvard, Vancouver, ISO, and other styles
2

Kausar, Ayesha, Ishaq Ahmad, Tingkai Zhao, Osamah Aldaghri, Khalid H. Ibnaouf, and M. H. Eisa. "Multifunctional Polymeric Nanocomposites for Sensing Applications—Design, Features, and Technical Advancements." Crystals 13, no. 7 (July 22, 2023): 1144. http://dx.doi.org/10.3390/cryst13071144.

Full text
Abstract:
Among nanocomposite materials, multifunctional polymer nanocomposites have prompted important innovations in the field of sensing technology. Polymer-based nanocomposites have been successfully utilized to design high-tech sensors. Thus, conductive, thermoplast, or elastomeric, as well as natural polymers have been applied. Carbon nanoparticles as well as inorganic nanoparticles, such as metal nanoparticles or metal oxides, have reinforced polymer matrices for sensor fabrication. The sensing features and performances rely on the interactions between the nanocomposites and analytes like gases, ions, chemicals, biological species, and others. The multifunctional nanocomposite-derived sensors possess superior durability, electrical conductivity, sensitivity, selectivity, and responsiveness, compared with neat polymers and other nanomaterials. Due to the importance of polymeric nanocomposite for sensors, this novel overview has been expanded, focusing on nanocomposites based on conductive/non-conductive polymers filled with the nanocarbon/inorganic nanofillers. To the best of our knowledge, this article is innovative in its framework and the literature covered regarding the design, features, physical properties, and the sensing potential of multifunctional nanomaterials. Explicitly, the nanocomposites have been assessed for their strain-sensing, gas-sensing, bio-sensing, and chemical-sensing applications. Here, analyte recognition by nanocomposite sensors have been found to rely on factors such as nanocomposite design, polymer type, nanofiller type, nanofiller content, matrix–nanofiller interactions, interface effects, and processing method used. In addition, the interactions between a nanocomposite and analyte molecules are defined by high sensitivity, selectivity, and response time, as well as the sensing mechanism of the sensors. All these factors have led to the high-tech sensing applications of advanced nanocomposite-based sensors. In the future, comprehensive attempts regarding the innovative design, sensing mechanism, and the performance of progressive multifunctional nanocomposites may lead to better the strain-sensing, gas/ion-sensing, and chemical-sensing of analyte species for technical purposes.
APA, Harvard, Vancouver, ISO, and other styles
3

Abdullah, Abu Hannifa, Kamal Yusoh, Mohamad Faiz Mohamed Yatim, Siti Amirah Nor Effendi, and Wan Siti Noorhashimah W. Kamaruzaman. "Characterization Copper (II) Chloride Modified Montmorillonite filled PLA Nanocomposites." Advanced Materials Research 858 (November 2013): 13–18. http://dx.doi.org/10.4028/www.scientific.net/amr.858.13.

Full text
Abstract:
The thermal behaviour of polymer layered silicate nanocomposite were characterised to compare the improvement of the nanocomposite with the pristine polymer. It is known that pristine polymers have some weakness in its thermal properties especially biodegradable polymers. The approach of making the nanocomposite out of modified layered silicate and biodegradable polymer is to enhance the thermal behaviour of the biodegradable polymer. The nanocomposites were produced by solution method technique using dichloromethane as a solvent and the two types of nanoclay were used. One was modified with transition metal ion and another type of nanoclay is pristine nanoclay. Wide angle X-ray diffraction (XRD) was used to characterise the structure of the nanoclay after the modification and the type of nanocomposite obtained. Melting temperature and degradation temperature of the nanocomposite were obtained by using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) respectively. Decrease in both thermal degradation temperature and melting temperature of the nanocomposites were observed.
APA, Harvard, Vancouver, ISO, and other styles
4

Kausar, Ayesha. "Polymeric nanocomposites reinforced with nanowires: Opening doors to future applications." Journal of Plastic Film & Sheeting 35, no. 1 (August 15, 2018): 65–98. http://dx.doi.org/10.1177/8756087918794009.

Full text
Abstract:
This article presents a state-of-the-art overview on indispensable aspects of polymer/nanowire nanocomposites. Nanowires created from polymers, silver, zinc, copper, nickel, and aluminum have been used as reinforcing agents in conducting polymers and non-conducting thermoplastic/thermoset matrices such as polypyrrole, polyaniline, polythiophene, polyurethane, acrylic polymers, polystyrene, epoxy and rubbers. This review presents the combined influence of polymer matrix and nanowires on the nanocomposite characteristics. This review shows how the nanowire, the nanofiller content, the matrix type and processing conditions affect the final nanocomposite properties. The ensuing multifunctional polymer/nanowire nanocomposites have high strength, conductivity, thermal stability, and other useful photovoltaic, piezo, and sensing properties. The remarkable nanocomposite characteristics have been ascribed to the ordered nanowire structure and the development of a strong interface between the matrix/nanofiller. This review also refers to cutting edge application areas of polymer/nanowire nanocomposites such as solar cells, light emitting diodes, supercapacitors, sensors, batteries, electromagnetic shielding materials, biomaterials, and other highly technical fields. Modifying nanowires and incorporating them in a suitable polymer matrix can be adopted as a powerful future tool to create useful technical applications.
APA, Harvard, Vancouver, ISO, and other styles
5

Kausar, Ayesha, Ishaq Ahmad, and Patrizia Bocchetta. "High-Performance Corrosion-Resistant Polymer/Graphene Nanomaterials for Biomedical Relevance." Journal of Composites Science 6, no. 12 (December 1, 2022): 362. http://dx.doi.org/10.3390/jcs6120362.

Full text
Abstract:
Initially, pristine polymers were used to develop corrosion-resistant coatings. Later, the trend shifted to the use of polymeric nanocomposites in anti-corrosion materials. In this regard, graphene has been identified as an important corrosion-resistant nanomaterial. Consequently, polymer/graphene nanocomposites have been applied for erosion protection applications. Among polymers, conducting polymers (polyaniline, polypyrrole, polythiophene, etc.) and nonconducting polymers (epoxy, poly(methyl methacrylate), etc.) have been used as matrices for anticorrosion graphene nanocomposites. The corrosion-resistant polymer/graphene nanocomposites have found several important applications in biomedical fields such as biocompatible materials, biodegradable materials, bioimplants, tissue engineering, and drug delivery. The biomedical performance of the nanomaterials depends on the graphene dispersion and interaction with the polymers and living systems. Future research on the anti-corrosion polymer/graphene nanocomposite is desirable to perceive further advanced applications in the biomedical arenas.
APA, Harvard, Vancouver, ISO, and other styles
6

Danikas, M., and S. Morsalin. "A Short Review on Polymer Nanocomposites for Enameled Wires: Possibilities and Perspectives." Engineering, Technology & Applied Science Research 9, no. 3 (June 8, 2019): 4079–84. http://dx.doi.org/10.48084/etasr.2678.

Full text
Abstract:
Polymer nanocomposites constitute a new generation of insulating materials, capable of offering better electrical, thermal and mechanical properties. Past research indicated that such materials may replace conventional polymers for a variety of industrial high voltage applications. In the present paper, polymer nanocomposites are investigated regarding the insulation of enameled wires. Possible nanocomposite candidates are discussed.
APA, Harvard, Vancouver, ISO, and other styles
7

Cho, Kie Yong, A. Ra Cho, Yun Jae Lee, Chong Min Koo, Soon Man Hong, Seung Sangh Wang, Ho Gyu Yoon, and Kyung Youl Baek. "Enhanced Electrical Properties of PVDF-TrFE Nanocomposite for Actuator Application." Key Engineering Materials 605 (April 2014): 335–39. http://dx.doi.org/10.4028/www.scientific.net/kem.605.335.

Full text
Abstract:
Carbon nanotubes (CNTs) coated by compatibilizer (P3HT-PMMA) imparted sta-ble dispersion in organic solvents and polymer matrix (P(VDF-TrFE)). The compatibility be-tween CNTs with P3HT-PMMA was con rmed by measuring Raman spectroscopy. CoatedCNTs were then blended with P(VDF-TrFE) (70:30 mol%) to obtain polymer nanocompositesby solution- casting process. Polymer nanocomposites showed enhanced electrical characteris-tics, as nanocomposites near the threshold of the transition between P(VDF-TrFE) insulatorand CNT conductor revealed great improvement of electrical conductivity up to 10-6 S/cmat 1 KHz. Electromechanical properties of the polymer nanocomposite were examined as afunction of electric eld.
APA, Harvard, Vancouver, ISO, and other styles
8

Kausar, Ayesha, Ishaq Ahmad, Malik Maaza, and M. H. Eisa. "State-of-the-Art Nanoclay Reinforcement in Green Polymeric Nanocomposite: From Design to New Opportunities." Minerals 12, no. 12 (November 23, 2022): 1495. http://dx.doi.org/10.3390/min12121495.

Full text
Abstract:
Nanoclays are layered aluminosilicate nanostructures. Depending upon the chemical composition and microscopic structure, various nanoclay types have been discovered such as montmorillonite, bentonite, kaolinite, halloysite nanoclay, etc. Nanoclays have been organically modified to develop compatibility with polymers. Polymer/nanoclay nanocomposites have prompted significant breakthroughs in the field of nanocomposite technology. Green nanocomposites form an important class of nanomaterials using naturally derived degradable materials as matrix/nanofiller. This review essentially deliberates the fundamentals and effect of nanoclay reinforcements in the green polymer matrices. Naturally derived polymers such as cellulose, starch, natural rubber, poly(lactic acid), etc. have been employed in these nanocomposites. Green polymer/nanoclay nanocomposites have been fabricated using various feasible fabrication approaches such as the solution route, melt processing, in situ polymerization, and others. The significance of the structure-property relationships in these nanomaterials, essential to attain the desired features, has been presented. Green polymer/nanoclay nanocomposites are light weight, inexpensiveness, ecofriendly, have a low cost, and enhanced indispensable physical properties. Consequently, the green polymer/nanoclay nanocomposites have found applications towards sustainability uses, packaging, membranes, and biomedical (tissue engineering, drug delivery, wound healing) sectors. However, thorough research efforts are desirable to extend the utility of the green polymer/nanoclay nanocomposites in future technological sectors.
APA, Harvard, Vancouver, ISO, and other styles
9

Chen, Xin, Qiyan Zhang, Ziyu Liu, Yifei Sun, and Q. M. Zhang. "High dielectric response in dilute nanocomposites via hierarchical tailored polymer nanostructures." Applied Physics Letters 120, no. 16 (April 18, 2022): 162902. http://dx.doi.org/10.1063/5.0087495.

Full text
Abstract:
This paper presents a hierarchically designed polymer nanocomposite approach in which nanofillers at ultralow volume loading generate large dielectric enhancement in blends of high temperature dielectric polymers with tailored nanostructures. We blend poly(1,4-phenylenen ether sulfone) (PES) with polymers, such as polyetherimide (PEI), that possess more coiled chain conformations to tailor polymer nano-morphologies. Making use of such blends as the matrix, dilute nanocomposites with 0.65 vol. % loading of alumina nanoparticles (20 nm size) generate a marked enhancement in dielectric performance, i.e., raising the dielectric constant K from PES K = 3.9 (and PEI K = 3.2) to the dilute nanocomposites K = 7.6, a much higher enhancement compared with the dilute nanocomposites employing neat polymers as the matrix. The results show that polymer blends with tailored nano-morphologies as the matrix can lead to higher dielectric enhancement in dilute nanocomposites compared with neat polymers as the matrix.
APA, Harvard, Vancouver, ISO, and other styles
10

Stojšić, Josip, Pero Raos, Andrijana Milinović, and Darko Damjanović. "A Study of the Flexural Properties of PA12/Clay Nanocomposites." Polymers 14, no. 3 (January 21, 2022): 434. http://dx.doi.org/10.3390/polym14030434.

Full text
Abstract:
Polymer nanocomposites consist of a polymer matrix and reinforcing particles that have at least one dimension under 100 nm. The processing of nanocomposite polymers is the most important stage, determining the final properties of nanocomposites. Nanocomposites are now preferentially prepared by melt-mixing using conventional compounding processes such as twin-screw extrusion. Many processing parameters (polymer matrix type, content and type of nanofiller, barrel temperature, screw speed, number and shape of extruder screws, etc.) affect the properties of nanocomposites. This research work represents an investigation of the influence of processing parameters (amount of nanoclay filler, the screw rotation speed, and extruder barrel temperature) on the flexural properties of polyamide 12/nanoclay-reinforced nanocomposite. From the test results, it is apparent that an increase in nanoclay content from 1 to 8% significantly increases flexural strength. The obtained nanocomposite has a 19% higher flexural strength and a 56% higher flexural modulus than pure PA12. Mathematical models that show the dependence of flexural strength and flexural modulus on the processing parameters used were obtained as a result of this analysis.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Polymer nanocomposites"

1

Su, Xing. "Polymer/montmorillonite nanocomposites : polyamide 6 nanocomposites and polyacrylamide nanocomposite hydrogels." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/18366/.

Full text
Abstract:
Polymer/clay nanocomposites have attracted great attention of researchers for two decades because they are light in weight, easy to be fabricated, and have some unique properties such as thermal barrier and corrosion resistant. Montmorillonite (MMT) is frequently chosen as the clay filler for polymer/clay nanocomposites because of its abundance, high functionality and high cation exchange capacity. This project aims to prepare novel polymer/MMT nanocomposites with adjustable microstructure, good mechanical properties and unique stimuli-sensitive properties. As the control over the clay intercalation/exfoliation ratio is difficult for the polymer/clay nanocomposites, the effect on clay exfoliation of polyamide 6/MMT nanocomposites by using a chemical blowing agent (CBA), citric acid, during extrusion was studied. X-ray diffraction confirmed that the decomposition of CBA did improve clay exfoliation. As many surfactants used for treating clay surface are likely to degrade during the melt processing of polymer/MMT nanocomposites, a novel thermally stable surfactant was used. Polyamide 6/MMT nanocomposites were prepared by either twice or triple extrusion. And the effect on the mechanical properties and thermal stability were studied. The incorporation of clays increased Young’s modulus but decreased strain at break. There was no significant improvement on the thermal stability by the incorporation of clays and/or CBA. Polymer nanocomposite hydrogels often showed high hysteresis when subject to cyclic tension, and their mechanical properties were hardly tested at the fully swollen state. Therefore a novel polyacrylamide (PAM)/polysaccharide-treated MMT nanocomposite hydrogel with low cyclic tensile hysteresis was successfully prepared by in situ polymerisation. This was shown to be stretchable, tough and highly compression-resistant at the fully swollen state. An interpenetrating nanocomposite hydrogel using PAM, MMT, alginate and Ca2+ was proposed in the same chapter. At the fully swollen state, apart from the good mechanical properties such as stretchability, toughness and resilience, it displayed significantly pH-dependant shape changes. As for the current alginate/MMT nanocomposites in the literature, only the mechanical properties under the dry state were studied. The mechanical properties of the fully swollen alginate/MMT/Ca2+ nanocomposite were investigated. The nanocomposite films turned out to be stiff, strong and transparent. Also some of the nanocomposite films were ultraviolet light-proof or sensitive to acetone. Based on the above findings, it is concluded that: firstly, there was a large amount of residual citric acid in the extruded materials, which reduced the mechanical properties and thermal stability of polyamide 6/MMT nanocomposites. Secondly, the thermally stable polymeric surfactant has the potential of enhancing the toughness and thermal stability of polyamide 6/MMT nanocomposites. Thirdly, it was likely to achieve low cyclic-tensile hysteresis, high strength, high toughness and stimuli-responsivity by the polymer/clay nanocomposite hydrogels at the fully swollen state. Those nanocomposite hydrogels can be used in a variety of applications including artificial tissues, medicine, agriculture, skin care and other aquatic uses.
APA, Harvard, Vancouver, ISO, and other styles
2

Mohagheghian, Iman. "Impact response of polymers and polymer nanocomposites." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648854.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mohaddes, pour Ahmad. "Granular polymer nanocomposites." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=117135.

Full text
Abstract:
Contrary to classical theories, nanoparticle dispersion in polymer melt has been shown to decrease the bulk viscosity, and to increase the membrane permeability and selectivity when incorporated into certain amorphous polymer glasses. However, the effects of particle concentration, particle size, and polymer configuration at particle interfaces are not well understood. To elucidate how the particle size, chain length, and mixture composition influence polymer-chain packing and, thus, free volume---which is known to primarily influence rheological and permeation properties of polymer nanocomposites---the volume of acrylic spheres (representing nanoparticles) mixed with aluminum ball chains (representing polymer chains) was measured, and the partial molar sphere volume at small but finite sphere volume fractions was calculated. The results show that the sphere radius with respect to the minimum chain loop size is the primary dimensionless parameter that affects mixture free volume. Moreover, free volume is maximal---up to twice the intrinsic inclusion volume per particle---when the sphere radius and the minimum chain loop size are comparable, which is because of the increase in sphere-chain interactions, whereas sphere-sphere interactions decrease the mixture free volume when particles are large. It was further determined that, in the presence of nanoparticles, free volume and polymer chain architecture play a determinative role in influencing the glass transition temperature of polymer nanocomposites. The reason for the decrease in the glass transition temperature of polymer nanocomposites is known to be the repulsive chain-nanoparticle interactions. However, in the absence of enthalpic interactions, it is still elusive how and why the glass transition temperature declines with nanoparticle loading. To examine the nanoparticle influence on chain relaxation dynamics and, thus, nanocomposite glass transition temperature, the relaxation time (the time to reach the close-packed, jammed state) of granular chain-sphere mixtures was measured by systematically changing the sphere size, chain length, and mixture composition. Measuring the compaction dynamics reveals that spherical inclusions profoundly influence the chain relaxation time when the characteristic nanoparticle separation and nanoparticle size are comparable to the chain loop size. This study can shed light on polymer architecture in the presence of nanoparticles, especially when chains are very long and, thus, beyond the capability of current computer simulations. This macroscopic, granular model can also be used to optimize the design of polymer nanocomposites by a judicious choice of nanoparticle size, chain length, and mixture composition for industrial and biomedical applications.
Contrairement aux théories classiques, les nanoparticules ont été utilisées pour diminuerla viscosité de volume lorsqu'elles sont dispersées dans un mélange de polymère, et pour augmenter la perméabilité de la membrane et la sélectivité lorsqu'elles sont incorporées dans certains verres polymères amorphes. Cependant, les effets sur la concentration des particules, sur la taille des particules et sur la configuration des polymères à particules inter faciales ne sont pas bien compris. Afin de comprendre comment la taille des particules, la longueur de la chaîne, et les différentes compositions influencent l'assemblage des chaines de polymères et, par conséquent, le volume libre — qui est connu principalement pour agir sur les propriétés rhéologiques et d'infiltration despolymères nanocomposites—le volume de sphères acryliques (représentant les nanoparticules) couplé avec les chaînes de billes d'aluminium (ce qui représente des chaînes de polymère) a été mesurée, et le volume molaire partiel des sphères a été calculée à partir depetit volume fini . Les résultats montrent que le rayon de la sphère par rapport à la taille dela boucle de la chaîne minimum est le paramètre qui affecte principalement la dimensiondu volume de mélange libre. De plus, le volume libre est maximale—jusqu'à deux fois levolume de l'inclusion intrinsèque par particule—lorsque le rayon de la sphère et la taille minimum de la boucle de la chaîne sont comparables, ce qui est d à l'augmentation des interactions dans la chaîne de la sphère, alors que les interactions sphère-sphère diminuent le volume du mélange libre lorsque les particules sont grandes. Il a également été déterminé que, en présence de nanoparticules, le volume libre et l'architecture de la chaîne du polymère jouent un rôle déterminant en influençant la température de transition vitreuse des polymères nano composites. La raison ostensible pour la diminution dela température de transition vitreuse des polymères nano composites est connue pour tre la répulsion entre les chaînes des nanoparticules. Toutefois, en l'absence d'interactions enthalpiques, c'est encore élusif de comment et pourquoi la température de transition vitreuse baisse avec le chargement des nanoparticules. Pour étudier l'influence des nanoparticules sur la dynamique de relaxation de la chaîne et, par conséquent, la température de transition de verre nanocomposite, le temps de relaxation (le temps d'atteindre l'état bloqué) de la chaine du mélange de granulés a été mesurée en changeant systématiquement la taille et la longueur de la sphère et le mélange de la composition. D'avoir mesurer la dynamique de compactage révèle que les inclusions sphériques influencent profondément le temps de relaxation de la chaîne lors de la séparation des nanoparticules caractéristiques ainsi que la taille des nanoparticules est comparable à la taille de la boucle de chaîne. Cette étude nous éclaire sur l'architecture des polymères en présence de nanoparticules, en particulier lorsque les chaînes sont très longues et par conséquent, au-delà de la capacité des simulations informatiques actuels pour être explorées à fond. Ce modèle macroscopique granulaire peut aussi être utilisé pour optimiser la conception de polymères nanocomposites par un choix judicieux de la taille des nanoparticules, de la longueur de la chaîne et la composition du mélange pour des applications industrielles et biomédicales.
APA, Harvard, Vancouver, ISO, and other styles
4

Chen, Biqiong. "Polymer-clay nanocomposites." Thesis, Queen Mary, University of London, 2004. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1854.

Full text
Abstract:
Polymer-clay nanocomposites are attracting global interest principally because property enhancements are obtained at low clay particle loadings (1-5 wt%). However there is lack of fundamental understanding of such composites. The aim of this work is to provide an insight into the interaction between polymer and clay. This includes the driving force for intercalation, the reinforcement mechanisms and property-volume fraction relationships. Functionalised poly(ethylene glycol)-clay, poly(c-caprolactone)-clay and thermoplastic starch-clay nanocomposites with a range of polymer molecular weights, clay volume fractions and with different clays were prepared using solution methods, melt-processing methods, and in situ polymerisation. A reliable X-ray diffraction technique for low angle basal plane spacing of clay, the essential parameter for structure determination, was established obtaining ±0.005 Mn between three diffractometers. The basal plane spacing was found to be unaffected by polymer molecular weight and preparation method but was affected by the nature of the polymer and clay. Increasing clay loading could lead to a lower spacing. As a cautionary observation, poly(ethylene glycol) with high molecular weight (2: 10,000) was found to undergo degradation readily during preparation of nanocomposites with and without clay. Competitive sorption experiments for molecular weight showed that high molecular weight fractions of polymer intercalate preferentially into clay during solution preparation. Thermodynamic studies on the intercalation process found that significant enthalpic change occurred during intercalation, which is coincident with the observation that heat-treated clays without interlayer water can intercalate polymer. The calculation of true volume fraction against nominal volume fraction provided reasonable explanation of property enhancement and helps understand the relation between nanocomposites and conventional composites. At a given clay loading, nanocomposites with better dispersion gave more property enhancement than those with lower dispersion or conventional composites. The crystallinity of semicrystalline polymer was also affected by varying extents of dispersion of clay. The use of X-ray diffraction with an internal standard was explored for quantitative analysis of intercalation and exfoliation.
APA, Harvard, Vancouver, ISO, and other styles
5

Paul, Anita N. "Silver-Polymer Nanocomposites." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3077.

Full text
Abstract:
The objective of this research was the development of an efficient method for the preparation of silver-polymer nanocomposites containing finely dispersed silver nanoparticles. The surface of nanosilver was functionalized by thiolation with 2-aminoethanethiol. Amino-modified nanosilver was covalently bonded to polyacrylic acid, biodegradable polymers like acid terminated polylactic acid, ester terminated poly(DL-lactide-co-glycolide) and acid terminated poly(DL lactide-co-glycolide) in the presence of diisopropylcarbodiimide by carbodiimide method. Esterification of the carboxyl groups of Ag-polyacrylic acid by hydrochloric acid in methanol resulted in the formation of a stable colloidal dispersion of Ag nanoparticles in the polymer matrix. It was observed that not just acid terminated polymers but also ester terminated polymers could react with functionalized nanosilver. This unusual reaction was due to the aminolysis of the ester bond in the polymer chain by the surface amino groups. Silver-polymer nanocomposites obtained with acid terminated polylactic acid and poly(DL-lactide-co-glycolide) contained highly dispersed nanosilver in the polymer matrix in comparison with the ester terminated poly(DL-lactide-co-glycolide). Chemical and structural characteristics of the obtained materials were studied by instrumental methods. Attained biodegradable materials confirmed X-ray contrast and bactericidal properties, which could be eventually used for biomedical applications.
APA, Harvard, Vancouver, ISO, and other styles
6

Mendez, James D. "Conjugated Polymer Networks and Nanocomposites." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1282841324.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Gurun, Bilge. "Deformation studies of polymers and polymer/clay nanocomposites." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37118.

Full text
Abstract:
Polymer clay nanocomposites have been a popular area of materials research since they were first introduced in the 1990s. The inclusion of clays into many different host polymers has been shown to improve the properties of matrix polymers in a number of ways including increased mechanical strength, thermal stability and improved barrier properties while keeping the composite light weight and transparent. Although there is a great deal of published work on the preparation and property measurements of polymer clay nanocomposites, there is no model to design a nanocomposite with a given set of properties for a specific end-use. While it is important to know the structure property relationships of materials, the understanding of how nanocomposites reach their final forms and properties is equally important. A thorough understanding of processing effects on the final structure of polymer clay nanocomposites is still missing. With this perspective, this thesis addresses building structure-processing relationships of polymer clay nanocomposites by analyzing multiaxial deformation behavior using in-situ x-ray scattering techniques. This thesis can be divided into two distinct parts. The first part concerns the design of the in-situ multiaxial deformation device (IMDD) used to create the deformation conditions that polymers go through during processing such as blow molding and thermoforming. The device was designed to overcome several concerns with in situ measurement by maintaining constant sample to detector distance, minimizing the material between the incident beam and the detectors, as well as exposing the same point on the sample throughout deformation. A new design to create biaxial deformation, termed in-situ biaxial deformation device (IBDD), is also introduced in this part of the thesis.. In addition, a new heating unit, attached to IBDD, is designed for higher temperature studies, up to 150°C, to imitate industrial processing conditions more closely. The second part of the thesis addresses the effect of strain, strain rate, and temperature as well as the amount of clay on the polymer morphology evolution during multiaxial deformation.. Two different polymer/clay systems were studied: poly(ethylene)/clay and poly(propylene)/clay. It was observed that the morphological evolution of polyethylene and polypropylene is affected by the existence of clay platelets as well as the deformation temperature and the strain rate. Martensitic transformation of orthorhombic polyethylene crystals into monoclinic crystal form was observed under strain but is hindered in the presence of clay nanoplatelets. The morphology evolution of poly(propylene) crystal structure during multiaxial deformation was more subtle where the most stable α-crystalline form went through strain induced melting. This was more noticeable in the nanocomposites with clays up to 5 wt%. It was also noted that the thickness of the interlamellar amorphous region increased with increasing strain at room temperature due to the elongation of the amorphous chains. The increase in the amorphous layer thickness is slightly higher for the poly(ethylene)/clay nanocomposites compared to neat poly(ethylene) while the increase in the lamellar long spacing is slightly higher for the neat poly(propylene) compared to poly(propylene)/clay nanocomposites. The rate of change in the characteristic repeat distance in both poly(ethylene) and poly(propylene) systems is higher at faster strain rates, at room temperature, where it remained constant during higher temperature deformations. Time dependent recovery after deformation studies have shown that poly(ethylene)/clay system reverts back to its initial configuration. The recovery in the amorphous chains was however observed to take longer in the clay added poly(ethylene)s. Crystalline relaxation was observed to happen almost instantly in the poly(ethylene)/clay system. On the other hand, amorphous chains in the poly(propylene)/clay system did not revert back to the initial configuration in the period of time that the recovery observations were performed while the crystalline configuration recovered back almost fully in the given time.
APA, Harvard, Vancouver, ISO, and other styles
8

Chirowodza, Helen. "Polymer-clay nanocomposites prepared by RAFT-supported grafting." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71914.

Full text
Abstract:
Thesis (PhD)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: In materials chemistry, surface-initiated reversible deactivation radical polymerisation (SI-RDRP) has emerged as one of the most versatile routes to synthesising inorganic/organic hybrid materials consisting of well-defined polymers. The resultant materials often exhibit a remarkable improvement in bulk material properties even after the addition of very small amounts of inorganic modifiers like clay. A novel cationic reversible addition–fragmentation chain transfer (RAFT) agent with the dual purpose of modifying the surface of Laponite clay and controlling the polymerisation of monomer therefrom, was designed and synthesised. Its efficiency to control the polymerisation of styrene was evaluated and confirmed through investigating the molar mass evolution and chain-end functionality. The surface of Laponite clay was modified with the cationic chain transfer agent (CTA) via ion exchange and polymerisation performed in the presence of a free non-functionalised CTA. The addition of the non-functionalised CTA gave an evenly distributed CTA concentration and allowed the simultaneous growth of surface-attached and free polystyrene (PS). Further analysis of the free and grafted PS using analytical techniques developed and published during the course of this study, indicated that the free and grafted PS chains were undergoing different polymerisation mechanisms. For the second monomer system investigated n-butyl acrylate, it was apparent that the molar mass targeted and the monomer conversions attained had a significant influence on the simultaneous growth of the free and grafted polymer chains. Additional analysis of the grafted polymer chains indicated that secondary reactions dominated in the polymerisation of the surface-attached polymer chains. A new approach to separating the inorganic/organic hybrid materials into their various components using asymmetrical flow field-flow fractionation (AF4) was described. The results obtained not only gave an indication of the success of the in situ polymerisation reaction, but also provided information on the morphology of the material. Thermogravimetric analysis (TGA) was carried out on the polymer-clay nanocomposite samples. The results showed that by adding as little as 3 wt-% of clay to the polymer matrix, there was a remarkable improvement in the thermal stability.
AFRIKAANSE OPSOMMING: Oppervlakgeïnisieerde omkeerbare deaktiveringsradikaalpolimerisasie (SI-RDRP) is een van die veelsydigste roetes om anorganiese/organiese hibriedmateriale (wat bestaan uit goed-gedefinieerde polimere) te sintetiseer. Die produk toon dikwels ʼn merkwaardige verbetering in die makroskopiese eienskappe – selfs na die toevoeging van klein hoeveelhede anorganiese modifiseerders soos klei. ʼn Nuwe kationiese omkeerbare addisie-fragmentasie kettingoordrag (RAFT) middel met die tweeledige doel om die modifisering van die oppervlak van Laponite klei en die beheer van die polimerisasie van die monomeer daarvan, is ontwerp en gesintetiseer. Die klei se doeltreffendheid om die polimerisasie van stireen te beheer is geëvalueer en bevestig deur die molêre massa en die funksionele groepe aan die einde van die ketting te ondersoek. Die oppervlak van Laponite klei is gemodifiseer met die kationiese kettingoordragmiddel (CTA) deur middel van ioonuitruiling en polimerisasie wat uitgevoer word in die teenwoordigheid van ʼn vrye nie-gefunksionaliseerde CTA. Die toevoeging van die nie-gefunksionaliseerde CTA het ʼn eweredig-verspreide konsentrasie CTA teweeggebring en die gelyktydige groei van oppervlak-gebonde en vry polistireen (PS) toegelaat. Verdere ontleding van die vrye- en geënte PS met behulp van analitiese tegnieke wat ontwikkel en gepubliseer is gedurende die verloop van hierdie studie, het aangedui dat die vry- en geënte PS-kettings verskillende polimerisasiemeganismes ondergaan. n-Butielakrilaat is in die tweede monomeer-stelsel ondersoek en dit was duidelik dat die molêre massa wat geteiken is en die geënte polimeerkettings. ʼn Nuwe benadering tot die skeiding van die anorganiese/organiese hibriedmateriale in hulle onderskeie komponente met behulp van asimmetriese vloeiveld-vloei fraksionering (AF4) is beskryf. Die resultate wat verkry is, het nie net 'n aanduiding gegee van die sukses van die in-situ polimerisasiereaksie nie, maar het ook inligting verskaf oor die morfologie van die materiaal. Termogravimetriese analise (TGA) is uitgevoer op die polimeer-klei nanosaamgestelde monsters. Die resultate het getoon dat daar 'n merkwaardige verbetering in die termiese stabiliteit was na die toevoeging van so min as 3 wt% klei by die polimeermatriks.
APA, Harvard, Vancouver, ISO, and other styles
9

Liu, Yi. "Mesoporous silica/polymer nanocomposites." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31739.

Full text
Abstract:
Thesis (Ph.D)--Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, 2010.
Committee Chair: Jacob. Karl; Committee Member: Griffin. Anselm; Committee Member: Tannenbaum. Rina; Committee Member: Thio. Yonathan S; Committee Member: Yao. Donggang. Part of the SMARTech Electronic Thesis and Dissertation Collection.
APA, Harvard, Vancouver, ISO, and other styles
10

Bilotti, Emiliano. "Polymer / Sepiolite Clay Nanocomposites." Thesis, Queen Mary, University of London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522330.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Polymer nanocomposites"

1

Huang, Xingyi, and Chunyi Zhi, eds. Polymer Nanocomposites. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Krishnamoorti, Ramanan, and Richard A. Vaia, eds. Polymer Nanocomposites. Washington, DC: American Chemical Society, 2001. http://dx.doi.org/10.1021/bk-2002-0804.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Dasari, Aravind, Zhong-Zhen Yu, and Yiu-Wing Mai. Polymer Nanocomposites. London: Springer London, 2016. http://dx.doi.org/10.1007/978-1-4471-6809-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Misra, Devesh K. Polymer nanocomposites. Warrendale, Pa: Minerals, Metals and Materials Society, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

1946-, Mai Y. W., Yu Zhong-Zhen, and Institute of Materials, Minerals, and Mining., eds. Polymer nanocomposites. Boca Raton, FL: CRC Press, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Verma, Rajesh Kumar, Shivi Kesarwani, Jinyang Xu, and J. Paulo Davim. Polymer Nanocomposites. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003343912.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Brauer, Samuel. Polymer nanocomposites. Norwalk, CT: Business Communications Co., 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mittal, Vikas, ed. Polymer-Graphene Nanocomposites. Cambridge: Royal Society of Chemistry, 2012. http://dx.doi.org/10.1039/9781849736794.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rahman, Md Rezaur, ed. Bamboo Polymer Nanocomposites. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68090-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Rahman, Md Rezaur. Wood Polymer Nanocomposites. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-65735-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Polymer nanocomposites"

1

Njuguna, James, and Krzysztof Pielichowski. "Polymer Nanocomposites." In Structural Materials and Processes in Transportation, 339–69. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527649846.ch10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Manero, Octavio, and Antonio Sanchez-Solis. "Polymer Nanocomposites." In Handbook of Polymer Synthesis, Characterization, and Processing, 585–604. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118480793.ch31.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Deorukhkar, Onkar A., S. Radhakrishnan, Yashwant S. Munde, and M. B. Kulkarni. "Polymer Nanocomposites." In Polymer-Based Composites, 73–95. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003126300-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Jena, Hemalata, and Sudesna Roy. "Polymer Nanocomposite Coatings." In Polymer Nanocomposites, 95–108. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003343912-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Yuan, Jinkai, Shenghong Yao, and Philippe Poulin. "Dielectric Constant of Polymer Composites and the Routes to High-k or Low-k Nanocomposite Materials." In Polymer Nanocomposites, 3–28. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bandaru, Prabhakar R., B. W. Kim, S. Pfeifer, R. S. Kapadia, and S. H. Park. "Electrically Conductive Polymer Nanocomposites with High Thermal Conductivity." In Polymer Nanocomposites, 255–80. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wang, Zifeng, and Chunyi Zhi. "Thermally Conductive Electrically Insulating Polymer Nanocomposites." In Polymer Nanocomposites, 281–321. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lan, Tie, and Günter Beyer. "Polymer–Clay Nanocomposites: A Novel Way to Enhance Flame Retardation of Plastics and Applications in Wire and Cable Industry." In Polymer Nanocomposites, 323–46. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Huang, Yanhui, and Xingyi Huang. "Dielectric Loss of Polymer Nanocomposites and How to Keep the Dielectric Loss Low." In Polymer Nanocomposites, 29–50. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Xue, Qingzhong, and Jin Sun. "Electrical Conductivity and Percolation Behavior of Polymer Nanocomposites." In Polymer Nanocomposites, 51–82. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28238-1_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Polymer nanocomposites"

1

Qiao, Rui, and L. Cate Brinson. "Gradient Interphases in Polymer Nanocomposites." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12706.

Full text
Abstract:
As revealed by experimental data on ultrathin polymer films [1, 2], polymer mobility changes in a gradient fashion away from the polymer-surface interface. However, little is yet known on gradients in mechanical properties in polymer nanocomposites. In this work, we discuss a novel nanoindentation experimental approach to measure these properties in model nanocomposite systems, the associated modeling to extract realistic data (Figure1), and simulations of representative volume elements (RVE) of nanocomposites including interphase layers (Figure2).
APA, Harvard, Vancouver, ISO, and other styles
2

Mallick, Shoaib, Zubair Ahmad, and Farid Touati. "Polymer Nanocomposite-based Moisture Sensors for Monitoring of the Water Contents in the Natural Gas Pipelines." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0073.

Full text
Abstract:
In this study, the polymer-based humidity sensors were investigated for humidity sensing applications. The key advantages of polymers that have garnered this attraction are their lightweight, easy preparation, and low cost of both materials and fabrication process. Different techniques are used to enhance the surface morphology and sensitivity of polymeric films, which include synthesis of nanocomposites, copolymerization techniques, and blending of polymers. The incorporation of nanoparticles to the polymer matrix improves the electrical and mechanical properties of the polymeric film. We have investigated different polymer nanocomposites based humidity sensors on enhancing the sensitivity of the sensor, on achieving faster response and recovery time and lower hysteresis loss as compared to the polymeric humidity sensors. In the first phase, we investigated the PLA-TiO2 nanocomposite for humidity sensing applications. We have optimized the concentration of TiO2 in the PLA-TiO2 nanocomposite and apply acetone for the surface treatment of the sensing film. In the second phase, we studied the PVDF-TiO2 nanocomposite-based humidity sensor, achieved a linear response of the sensor, and optimized the concentration of PVDF. In the third phase, we incorporated the BaTiO3 nanoparticles within optimized PVDF and studied the dielectric property of the nanocomposite film. PVDF-BaTiO3 sensors show a smaller hysteresis response. In the 4th phase, we blend the PVDF with SPEEK polymer; the optimized concentration of SPEEK improves the sensitivity of the humidity sensors at a lower humidity level.
APA, Harvard, Vancouver, ISO, and other styles
3

MORA, ANGEL, CARLOS MEDINA, and FRANCIS AVILÉS. "A COMPUTATIONAL MODEL FOR THE PIEZORESISTIVE RESPONSE OF HYBRID CARBON NANOSTRUCTURED NETWORKS." In Thirty-sixth Technical Conference. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/asc36/35860.

Full text
Abstract:
Carbon nanotubes (CNTs) and graphenic sheets (GSs) are commonly used fillers for polymer nanocomposites. These nanocomposites can be used as selfsensing materials (strain and damage sensors) due to their piezoresistive response. CNT/GS hybrid fillers could be used to tune the nanocomposite’s piezoresistive response. The piezoresistive response of polymers filled with hybrid carbon nanofillers is a novel topic being studied recently experimentally, and very few computational works are available. Thus, a computational model is developed to study the piezoresistive response of polymers filled with CNT/GS hybrid fillers, reproducing geometries and conditions similar to those used in experiments. This computational model generates a network of three dimensional (3D) representations of carbon nanostructures inside a cube, which represents the polymer matrix. The network of nanostructures is turned into a network of resistors to obtain the electrical conductivity of the cube, and thus the polymer nanocomposite. Mechanical strain is applied via coupling with a finite element software. To reduce computational time, embedded elements are used in the finite element simulations. Capabilities and limitations of the proposed computational model are explored.
APA, Harvard, Vancouver, ISO, and other styles
4

Ulu, Furkan Ismail, Ram Mohan, and Ravi Pratap Singh Tomar. "Development of Thermally Conductive Polymer/CNF Nanocomposite Materials via PolyJet Additive Manufacturing by Improvement of Digital Material Design." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11556.

Full text
Abstract:
Abstract PolyJet printing technology allows building polymeric materials with complex multi-material structures in the resolution of tens of microns layer thickness providing high control over the entire 3-D part. On the other hand, thermally conductive polymer/CNF nanocomposite materials offer new opportunities for replacing metals in industry and applications that require heat dissipation to avoid degradation of materials prematurely. CNFs are one of the best promising filler types to enhance thermal conductance of polymers. However, experimental thermal conductivities of polymer/CNF nanocomposites are significantly low compared to the intrinsic thermal conductivity of CNFs. Present work focused on selectively addition CNF fillers to form a thermally conductive path which helps to control dispersion and alignment. PolyJet printing forms the material and the structure simultaneously which allows the control over the material distribution and morphology on entire 3-D parts while providing possibilities to manipulate the design and create a conductive path. In the present research, improvement of thermal conductivity of Polymer/CNF nanocomposites via PolyJet printing using voxel digital printing method was investigated. Samples were designed as VeroClear material, VeroClear with CNFs, VeroCyan material, VeroCyan with CNFs. DSC and TPS were used to perform the thermal characterization of the samples.
APA, Harvard, Vancouver, ISO, and other styles
5

Shaito, Ali A., Nandika A. D'Souza, Debora Fairbrother, and Jerry Sterling. "Nonlinear Stress and Temperature Creep Relations in Polymer Nanocomposites." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16072.

Full text
Abstract:
Stress and temperature response of Polyethylene (PE) nanocomposites is mapped and predicted using creep-recovery measurements. The results indicate that the PE nanocomposite exhibit nonlinear response. When montmorillonite layered silicates (MLS) are introduced into the polymer, the stress response deviates substantially. Recovery curves of the nanocomposites were lower than those of the creep response. Viscoplastic strain was lower in the case of the nanocomposites. The material responses are analyzed using mechanical analogs.
APA, Harvard, Vancouver, ISO, and other styles
6

Pekcan, Önder, and Şaziye Uğur. "Polymer-ceramic nanocomposites." In SPIE Europe Microtechnologies for the New Millennium, edited by Ali Serpenguzel. SPIE, 2009. http://dx.doi.org/10.1117/12.821747.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Rebord, G., N. Hansrisuk, B. Lindsay, C. Lekakou, G. T. Reed, and J. F. Watts. "Electrofunctional polymer nanocomposites." In 2008 2nd Electronics Systemintegration Technology Conference. IEEE, 2008. http://dx.doi.org/10.1109/estc.2008.4684561.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Scatto, Marco, and Michele Sisani. "Active polymer nanocomposites: Application in thermoplastic polymers." In PROCEEDINGS OF THE REGIONAL CONFERENCE GRAZ 2015 – POLYMER PROCESSING SOCIETY PPS: Conference Papers. Author(s), 2016. http://dx.doi.org/10.1063/1.4965505.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Sengezer, Engin Cem, and Gary D. Seidel. "Experimental Characterization of Strain and Damage Evolution in Carbon Nanotube-Polymer Nanocomposites." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7612.

Full text
Abstract:
An experimental characterization of nanocomposite strain and damage sensing in support of development of CNT-polymer nanocomposites for structural health monitoring (SHM) applications was conducted. As such, effort here is focused towards examining the piezoresistive behavior of poly(dimethyl-siloxane) (PDMS) and epoxy filled with acid treated single walled carbon nanotubes (COOH-SWNTs) under quasi-static compression and tension. Precision LCR Meter with two terminal method, in conjunction with mechanical testing and data acquisition system were used to measure instantaneous resistance values. Given the emphasis on SHM applications which correlate changes in electrical resistivity to deformation and damage, 0.1 wt% COOH-SWCNTs concentration below the nanocomposite electrical percolation threshold was considered for PDMS and epoxy. Measurements confirmed the onset of damage prior to noticeable effects in the stress-strain response. The resistance measurements were able to both detect strain for PDMS nanocomposites and damage initiation and provide continuous assessment of the damage state between damage initiation events for epoxy nanocomposites. Digital Image Correlation (DIC) System was used to observe the crack propagation on notched epoxy nanocomposite compact tension samples.
APA, Harvard, Vancouver, ISO, and other styles
10

Ganguli, Sabyasachi, Ajit K. Roy, David Anderson, and Josh Wong. "Thermally Conductive Epoxy Nanocomposites." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43347.

Full text
Abstract:
The quest for improvement of thermal conductivity in aerospace structures is gaining momentum. This is even more important as modern day aerospace structures are embedded with electronics which generate considerable amounts of heat energy. This generated heat if not dissipated might potentially affect the structural integrity of the composite structure. The use of polymer based composites in aerospace applications has also increased due to their obvious superior specific properties. But the thermal conductivity of the polymer matrix is very low and not suited for the design demands in aerospace applications. Several research studies have been conducted to improve the thermal conductivity of the polymeric composites. Different fillers have been used to improve the thermal conductivity of the polymeric matrix. Fillers may be in the form of fibers or in the form of particles uniformly distributed in the polymer matrix. The thermophysical properties of fiber filled composites are anisotropic, except for the very short, randomly distributed fibers, while the thermophysical properties of particle filled polymers are isotropic. Numerous studies have also been conducted in recent years where nanoparticles have been dispersed in the polymeric matrix to improve the thermal conductivity. Putman et al. [1] used the 3ω method to study the thermal conductivity of composites of nanoscale alumina particles in polymethylmethacrylate (PMMA) matrices in the temperature range 40 to 280 K. For 10% of 60 nm of alumina particle filler by weight (3.5% by volume) thermal conductivity of the composite slightly decreased at low temperatures. Whereas, above 100 K, thermal conductivity of the nanocomposite increased by 4% at room temperature. Kruger and Alam [2] studied the thermal conductivity of aligned, vapor grown carbon nanoscale fiber reinforced polypropylene composite. They measured thermal conductivity by laser flash instrument in the longitudinal and transverse directions for 9%, 17% and 23% fiber reinforcements by volume. The values of thermal conductivity as reported by them were 2.09, 2.75, 5.38 W/m.K for the longitudinal directions and 2.42, 2.47, 2.49 W/m-K for the transverse direction respectively, while the thermal conductivity of unfilled PP was 0.24 W/m-K. Exfoliated graphite platelets are another filler material of promise for improving the thermo-mechanical properties of the polymeric matrix. Aylsworth [3, 4] developed and proposed expanded graphite as reinforcement of polymers in 1910s. Lincoln and Claude [5] in 1980s proposed the dispersion of intercalated graphite in polymeric resins by conventional composite processing techniques. Since that time, research has been conducted on exfoliated graphite reinforced polymers using graphite particles of various dimensions and a wide range of polymers. Drzal et al. [6] have demonstrated the use of exfoliated graphite platelets to enhance the thermal and mechanical properties of polymeric resins. They concluded that composites made by in situ processing have better mechanical properties compared to composites made by melt-mixing or other ex situ fabrication methods due to better dispersion, prevention of agglomeration and stronger interactions between the reinforcement and the polymer. In the present study we use silver nano-filaments, nickel nano-filaments, alumina and exfoliated graphite platelets to enhance the thermal conductivity of an epoxy thermoset resin. The objective of this research is to identify the right filler to achieve the thermal conductivity as required by aerospace design engineers which is around 10 W/ m-K. An arbitrary filler loading of 8 wt% was chosen to compare the different fillers used in this study.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Polymer nanocomposites"

1

Gilman, Jeffrey W., Takashi Kashiwagi, Alexander B. Morgan, Richard H. Jr Harris, Lori Brassell, Mark VanLandingham, and Catheryn L. Jackson. Flammability of polymer clay nanocomposites consortium:. Gaithersburg, MD: National Institute of Standards and Technology, 2000. http://dx.doi.org/10.6028/nist.ir.6531.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Moghtadernejad, Sara, Ehsan Barjasteh, Ren Nagata, and Haia Malabeh. Enhancement of Asphalt Performance by Graphene-Based Bitumen Nanocomposites. Mineta Transportation Institute, June 2021. http://dx.doi.org/10.31979/mti.2021.1918.

Full text
Abstract:
As the State of California continues to grow, demand for enhanced infrastructure such as roadways and highways escalates. In view of the current average highway lifespan of 15–20 years, the improvement of asphalt binders leads to material sustainability by decreasing required maintenance and increasing the lifespan of roadways. In the present investigation, enhancement of asphalt binder properties was achieved by different methods of mixing varying compositions of graphene nanoparticles with an SBS polymer and asphalt binder. Additionally, experimental evaluation and comparison of the rheological and mechanical properties of each specimen is presented. Graphene nanoparticles have attracted great curiosity in the field of highway materials due to their incredible rigidity, even in small quantities. Addition of as little as 1.0%nanoparticles in combination with polymers in an asphalt binder is expected to increase the rigidity of the material while also maintaining the beneficial polymer characteristics. Evaluation of the effect of the mixing design established that the methods for application of graphene to the polymer-modified asphalt binder are critical in the improvement of a roadway, resulting in resistance to premature aging and strain from constant road operation.
APA, Harvard, Vancouver, ISO, and other styles
3

Mabry, Joseph M., Timothy S. Haddad, and Steven A. Svejda. Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes (POSS). Fort Belvoir, VA: Defense Technical Information Center, December 2004. http://dx.doi.org/10.21236/ada433239.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sheng, Xia. Polymer nanocomposites for high-temperature composite repair. Office of Scientific and Technical Information (OSTI), January 2008. http://dx.doi.org/10.2172/964401.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mukherjee, Amiya K., Xinzhang Zhou, Dustin M. Hulbert, Joshua D. Kuntz, and Rajendra K. Sadangi. Creep Behavior of Polymer Precursor Derived Si3N4/SiC Nanocomposites. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada426308.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Mukherjee, Amiya K. Creep Behavior of Polymer Precursor Derived Si3N4/SiC Nanocomposites. Fort Belvoir, VA: Defense Technical Information Center, July 2003. http://dx.doi.org/10.21236/ada416774.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Eilers, Hergen. Multispectral Visible/Infrared Sensors Based on Polymer-Metal Nanocomposites. Fort Belvoir, VA: Defense Technical Information Center, January 2010. http://dx.doi.org/10.21236/ada519425.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mukherjee, Amiya K. Creep Behavior of Polymer Precursor Derived Si3N4/SiC Nanocomposites. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada390327.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wei, Kung-Hwa. High-Sensitivity Conjugated Polymer/Nanoparticle Nanocomposites for Infrared Sensor Applications. Fort Belvoir, VA: Defense Technical Information Center, March 2011. http://dx.doi.org/10.21236/ada538201.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wei, Kung-Hwa. Surface-Modified Quantum Dots Enhanced Luminescence Polymer Nanocomposites Light Emitting Diode. Fort Belvoir, VA: Defense Technical Information Center, September 2006. http://dx.doi.org/10.21236/ada473117.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Polymer nanocomposites' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography