Academic literature on the topic 'Bio-based Thermoplastic Polyurethane'

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Journal articles on the topic "Bio-based Thermoplastic Polyurethane"

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Barmouz, Mohsen, and Amir Hossein Behravesh. "Foaming and thermal characteristics of bio-based polylactic acid–thermoplastic polyurethane blends." Journal of Cellular Plastics 54, no. 6 (August 27, 2018): 931–55. http://dx.doi.org/10.1177/0021955x18793841.

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This paper reports a research work on characterization of foamed biocompatible polylactic acid–thermoplastic polyurethane blends in terms of microstructural, thermal, and physical properties. The brittleness of the polylactic acid is compensated via blending with an elastoplastic phase of thermoplastic polyurethane. A range of low bulk density foam with a high cell density was produced in a solid state foaming process. Addition of thermoplastic polyurethane phase acted against the cell growth and thus foam expansion, apparently due to its inherent lower storage modulus, which weakens the polymer matrix and leads to gas escape phenomenon. Evaluation of thermal properties showed a tangible effect of blending and foaming process on crystallization of the specimens, which confirmed that the sensitivity of polylactic acid’s crystallinity to CO2 gas saturation was reduced as a result of thermoplastic polyurethane addition. Measurement of cell diameters and cell densities of the foamed samples demonstrated formation of the fine closed cells structure as a result of suitable foaming parameters that were able to deal with stiffness and strength of the polymeric matrix.
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Saisangtham, Suchawadee, Manunya Okhawilai, and Pranut Potiyaraj. "Preparation of Novel partially Bio-Based Thermoplastic Polyurethane / Polyacrylonitrile Electrospun Fiber Mats." Journal of Physics: Conference Series 2175, no. 1 (January 1, 2022): 012005. http://dx.doi.org/10.1088/1742-6596/2175/1/012005.

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Abstract The partially bio-based thermoplastic polyurethane/polyacrylonitrile electrospun fiber mats at various weight ratio was fabricated via electrospinning technique. A partially bio-based thermoplastic polyurethane was prepared from caprolactone diol and partially bio-based diisocyanate at a mole ratio of 2.1:1. Ethylene glycol was used as a chain extender. Three major effects i.e. solution concentration, distance from tip to collector and applied voltage on morphology of the obtained electrospun fiber mats were systematically investigated using a scanning electron microscope. The design of experiment, namely, Taguchi method was also applied. The morphology of the prepared electrospun fiber mats revealed continuous and smooth fibers without the formation of beads. The fiber diameters of the thermoplastic bio-based polyurethane/polyacrylonitrile were in micron size ranging from 0.2 to 1.4 μm. Moreover, the results showed that with the decrease of concentration, the fiber diameter decreased where the changes of applied voltage and distance from tip to collector resulted in negligible changes in fiber diameter. The findings can be further applied as processing conditions to meet properties requirements for the high-performance separator application.
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Głowińska, Ewa, Paulina Kasprzyk, and Janusz Datta. "The Green Approach to the Synthesis of Bio-Based Thermoplastic Polyurethane Elastomers with Partially Bio-Based Hard Blocks." Materials 14, no. 9 (April 30, 2021): 2334. http://dx.doi.org/10.3390/ma14092334.

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Bio-based polymeric materials and green routes for their preparation are current issues of many research works. In this work, we used the diisocyanate mixture based on partially bio-based diisocyanate origin and typical petrochemical diisocyanate for the preparation of novel bio-based thermoplastic polyurethane elastomers (bio-TPUs). We studied the influence of the diisocyanate mixture composition on the chemical structure, thermal, thermomechanical, and mechanical properties of obtained bio-TPUs. Diisocyanate mixture and bio-based 1,4-butanediol (as a low molecular chain extender) created bio-based hard blocks (HS). The diisocyanate mixture contained up to 75 wt % of partially bio-based diisocyanate. It is worth mentioning that the structure and amount of HS impact the phase separation, processing, thermal or mechanical properties of polyurethanes. The soft blocks (SS) in the bio-TPU’s materials were built from α,ω-oligo(ethylene-butylene adipate) diol. Hereby, bio-TPUs differed in hard segments content (c.a. 30; 34; 40, and 53%). We found that already increase of bio-based diisocyanate content of the bio-TPU impact the changes in their thermal stability which was measured by TGA. Based on DMTA results we observed changes in the viscoelastic behavior of bio-TPUs. The DSC analysis revealed decreasing in glass transition temperature and melting temperature of hard segments. In general, obtained materials were characterized by good mechanical properties. The results confirmed the validity of undertaken research problem related to obtaining bio-TPUs consist of bio-based hard building blocks. The application of partially bio-based diisocyanate mixtures and bio-based chain extender for bio-TPU synthesis leads to sustainable chemistry. Therefore the total level of “green carbons” increases with the increase of bio-based diisocyanate content in the bio-TPU structure. Obtained results constitute promising data for further works related to the preparation of fully bio-based thermoplastic polyurethane elastomers and development in the field of bio-based polymeric materials.
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Rashmi, Baralu Jagannatha, Daniela Rusu, Kalappa Prashantha, Marie France Lacrampe, and Patricia Krawczak. "Development of Water Blown Bio-Based Thermoplastic Polyurethane Foams." Advanced Materials Research 584 (October 2012): 361–65. http://dx.doi.org/10.4028/www.scientific.net/amr.584.361.

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Water blown biobased thermoplastic polyurethane (TPU) foams were prepared using synthetic and biobased chain extender. The concentration of chain extender, blowing agent (BA) and surfactant were varied and their effects on physical, mechanical and morphological properties of foams were investigated. Density, compressive strength and modulus of foams decreases with an increase in BA content and increased with chain extender concentration, but do not change significantly with change in surfactant concentration. The glass-transition temperatures of the foam samples increases with an increase in BA and chain extender concentration. The cell size of the foam sample increases slightly with an increase in BA whereas chain extender concentration has no effect on cell size.
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Mondal, Subrata, Paul Memmott, and Darren Martin. "Preparation and Characterization of Spinifex Resin-based Bio-Polyurethane/Thermoplastic Polyurethane Blends." Polymer-Plastics Technology and Engineering 52, no. 15 (December 8, 2013): 1535–41. http://dx.doi.org/10.1080/03602559.2013.820757.

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Tang, Donglin, Christopher W. Macosko, and Marc A. Hillmyer. "Thermoplastic polyurethane elastomers from bio-based poly(δ-decalactone) diols." Polym. Chem. 5, no. 9 (2014): 3231–37. http://dx.doi.org/10.1039/c3py01120h.

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Majdoub, Mohammed, Younes Essamlali, Othmane Amadine, Ikram Ganetri, and Mohamed Zahouily. "Organophilic graphene nanosheets as a promising nanofiller for bio-based polyurethane nanocomposites: investigation of the thermal, barrier and mechanical properties." New Journal of Chemistry 43, no. 39 (2019): 15659–72. http://dx.doi.org/10.1039/c9nj03300a.

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The present study focuses on the design of new nanocomposite films using bio-based thermoplastic polyurethane (TPU) as a polymer matrix and long chain amine functionalized reduced graphene oxide (G-ODA) as a nanofiller.
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Głowińska, Ewa, Olga Gotkiewicz, and Paulina Kosmela. "Sustainable Strategy for Algae Biomass Waste Management via Development of Novel Bio-Based Thermoplastic Polyurethane Elastomers Composites." Molecules 28, no. 1 (January 3, 2023): 436. http://dx.doi.org/10.3390/molecules28010436.

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This work concerns the waste management method of algae biomass wastes (ABW). For this purpose, we prepared bio-based thermoplastic polyurethane elastomer (bio-TPU) composites. Algae biomass wastes are derived from algal oil extraction of Chlorella vulgaris and from biomass of Enteromorpha and Zostera marina. ABWs were used in the bio-TPUs composites as a filler in the quantity of 1, 5, 10, and 15 wt.%. The bio-based composites were prepared via the in situ method. Polymer matrix was synthesized from a bio-based polyester polyol, diisocyanate mixture (composed of partially bio-based and synthetic diisocyanates), and bio-based 1,3 propanediol. In this study, the chemical structure, morphology, thermal and mechanical properties of prepared composites were investigated. Based on the conducted research, it was determined that the type and the content of algae waste influence the properties of the bio-based polyurethane matrix. In general, the addition of algae biomass wastes led to obtain materials characterized by good mechanical properties and noticeable positive ecological impact by increasing the total amount of green components in prepared bio-TPU-based composites from 68.7% to 73.54%.
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Hou, Xi, Liwen Sun, Wei Wei, Darlene K. Taylor, Shengpei Su, and Haibin Yu. "Structure and performance control of high‐damping bio‐based thermoplastic polyurethane." Journal of Applied Polymer Science 139, no. 18 (December 30, 2021): 52059. http://dx.doi.org/10.1002/app.52059.

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Wang, Zhaoshan, Jieqiong Yan, Tongyao Wang, Yingying Zai, Liyan Qiu, and Qingguo Wang. "Fabrication and Properties of a Bio-Based Biodegradable Thermoplastic Polyurethane Elastomer." Polymers 11, no. 7 (July 2, 2019): 1121. http://dx.doi.org/10.3390/polym11071121.

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Using the melt polycondensation of five bio-based aliphatic monomers (succinic acid, sebacic acid, fumaric acid, 1,3-propanediol, and 1,4-butanediol), we first synthesized the more flexible and biodegradable polyester diols (BPD) with an average molecular weight of 3825. Then, the BPD was polymerized with excessive 4,4′-diphenylmethane diisocyanate (MDI). Finally, the molecular chain extender of 1,4-butanediol (BDO) was used to fabricate the biodegradable thermoplastic polyurethane elastomer (BTPU), comprising the soft segment of BPD and the hard segment polymerized by MDI and BDO. Atomic force microscope (AFM) images showed the two-phase structure of the BTPU. The tensile strength of the BTPU containing 60% BPD was about 30 MPa and elongation at break of the BTPU was over 800%. Notably, the BTPU had superior biodegradability in lipase solution and the biodegradation weight loss ratio of the BTPU containing 80% BPD reached 36.7% within 14 days in the lipase solution.
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Dissertations / Theses on the topic "Bio-based Thermoplastic Polyurethane"

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MOURA, DOS SANTOS ROSANE. "Development of a Novel Electrically Conductive Flame Retardant Bio-based Thermoplastic Polyurethane." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2589612.

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The central topic of this thesis was the design and development of a bi-functional thermoplastic polyurethane (TPU) composite, which is halogen-free bio-based flame retardant (UL94-V0) with an electrical resistivity ≤ 1000 Ω.cm and a filler load that does not exceed 25 wt.%. In order to reach this goal, the experimental activities were divided into the following tasks: (a) materials pre-selection, (b) design of experiment (DOE), (c) materials compounding, (d) specimens preparation (injection moulding), and (e) materials characterization (electrical resistivity tests, flammability tests, and microstructure analysis). In other words, the main tasks were identifying the ingredients (in a first stage) and defining the optimal proportions of additives (in a second stage) capable of simultaneously conferring to the polymer of interest the most desirable values of flame retardancy (as high as possible) and electrical resistivity (as low as possible); followed by the material preparation (third stage) and the material characterization (forth stage). The materials (flame retardants and electrically conductive additives) used in the development of this novel formulation were pre-selected mainly based on bibliographical studies. Then, the experimental activities and the analysis of the test results allowed to identify positive and negative effects among the components of the formulation such as synergistic effects among flame retardants on the improvement of the fire resistant performance. The obtained final formulation accomplished the desired target values of flame retardancy (V0 compliant) and electrical resistivity (≤1000 Ω.cm). It was compared to commercial products from the companies RTP, BASF and LUBRIZOL, which are used in the same field of application. The material developed during this work showed a lower electrical resistivity than these commercially available products while being bio-based and V0 (UL-94 test) at the same time. In addition, an innovative online acquisition apparatus for monitoring the surface growth of flame retardant protective layers was designed and developed during this thesis, which provided a deep insight of the dynamic behaviour of a phosphorous-based flame retarded material. The measurement of the surface protective layer growth rate provided a better understanding of the behaviour of the flame retardant systems, correlating the speed of the chemical reaction with the performances of the material.
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McMaster, Michael S. "Optoelectronic Applications For Bio-Based Materials." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case155257775382127.

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Maisonneuve, Lise. "Vegetable oils as a platform for the design of sustainable and non-isocyanate thermoplastic polyurethanes." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR15218/document.

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Cette thèse porte sur la synthèse de polyuréthanes thermoplastiques plus durables à partir de dérivés des huiles végétales. La première voie étudiée est basée sur la réaction, largement utilisée, entre un diol et un diisocyanate. Aussi, pour s’affranchir de l’utilisation des diisocyanates toxiques, une approche via la polyaddition entre un bis carbonate cyclique et une diamine a également été étudiée. Pour ce faire des précurseurs bi-fonctionnels : diols, bis carbonates cycliques à 5 et 6 chainons et diamines ont été préparés à partir de dérivés de l’huile de tournesol (oléate de méthyle) et de l’huile de ricin (undécénoate de méthyle et acide sébacique). Les propriétés thermo-mécaniques des polyuréthanes et poly(hydroxyuréthane)s thermoplastiques obtenus ont pu être ajustées par le choix adapté de la structure chimique des précurseurs (gras) utilisés. Les travaux réalisés démontrent un effet de la taille du cycle du carbonate sur la réactivité. En effet, les (bis) carbonates cycliques à 6 chainons se sont avérés plus réactifs que leurs homologues à 5 chainons. De plus, la synthèse de diamines via un intermédiaire dinitrile semble très prometteuse pour le « design » d’une plateforme de diamines issues d’acides gras et de poly(hydroxyuréthane)s entièrement bio-sourcés
This thesis aims to synthesize more sustainable thermoplastic polyurethanes from vegetable oil derivatives. The first route that has been investigated is based on the well-known reaction between a diol and a diisocyanate. Then to avoid the use of diisocyanates, the route via the polyaddition of a bis cyclic carbonate and a diamine have been studied as well. For this purpose, bifunctional precursors such as diols, bis 5- and 6-membered cyclic carbonates and diamines have been prepared from sunflower oil derivative (methyl oleate) and castor oil derivatives (methyl undecenoate and sebacic acid) The thermo-mechanical properties of the PUs have been modulated by designing and selecting the chemical structure of the (fatty acid-based) monomers. The performed model reaction kinetics revealed the higher reactivity of the 6-membered cyclic carbonates compare to the 5-membered ones. Finally, the developed route to fatty acid-based diamines via dinitriles synthesis in mild conditions was really efficient and this route is really promising to develop a fatty acid based-diamines platform and fully bio-based poly(hydroxyurethane)s
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Huang, Yu-Lin, and 黃昱霖. "Study and Characterization of Bio-based Thermoplastic Polyurethane." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/2q73hu.

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碩士
國立臺北科技大學
有機高分子研究所
105
The experiment design injection and extrusion molding product;synthesis thermoplastic polyurethane(TPU)with one-step method. This experiment use sustainable renewable Bio-based polyalcohol:Poly(propylene succinate)(PPS)and Polytetrahydrofuran(PTMG)were be as polyurethanes soft segment. 4,4-Methylene diphenyl diisocyanate(MDI)、1,4-Butane diol(BDO) were be as polyurethanes hard segment which has better reactivity and mechanical properties. This experiment found that breaking stress unchanging, elongation increases when molecular weight of polyalcohol is 2,000 below. Otherwise, when molecular weight of polyalcohol is over than 2,000, breaking stress is unchanging even get better, elongation decreases.
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Wang, Yi-Ting, and 王薏婷. "Investigation of hard segment on the physical behavior of Bio-based Thermoplastic Polyurethane." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/kedp83.

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碩士
國立臺北科技大學
分子科學與工程系有機高分子碩士班
106
Thermoplastic polyurethane (TPU) is a newer plastic with respect to other materials, has both rubber and hard thermoplastic characteristics. However, awareness of environmental awareness has risen in recent years, and as many as 99.99% of the market is using Petroleum-based TPU resin. Therefore, we have developed a Bio-based TPU with industrial value, taking into account both environmental protection and industrial requirements, so that TPU can be more in line with “environmental protection materials” in the future. This study synthesizes thermoplastic polyurethanes by a one-shot polymerization process that is more compatible with industrial production methods. Bio-based polyols with sustainable regeneration: Poly(propylene succinate) (PPS) and Polytetrahydrofuran (PTMG) as soft segments of TPU. In the hard segment, four different isocyanate groups are used, which are industrially commonly used 4,4-diisocyanate dicyclohexylamine (MDI), 4,4-Diisocyanato dicyclohexylmethane (H12MDI), Isophorone diisocyanate (IPDI) and Hexamethylene diisocynate (HDI) with chain extender 1,4-butandiol. Investigation the effect of different isocyanates on the mechanical and thermal properties of TPU. All samples are characterized by Nuclear Magnetic Resonacce (1H-NMR), Fourier Transform Infrared Spectroscopy (FT-IR), Gel Permeation Chromatography(GPC), Differential Scanning Calorimetry (DSC), Dynamic Mechanical Spectrometer(DMA), Thermal Gravimetric Analyzer (TGA), Tensile Testing Machine , Shore hardness, Melt Flow Indexer and Atomic Force Microscope(AFM) for determining the structure, chemical group adsorption , molecular weight, thermal property, mechanical properties and surface and section scanning.
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Book chapters on the topic "Bio-based Thermoplastic Polyurethane"

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Bueno-Ferrer, C., N. Burgos, and A. Jiménez. "Vegetable Oils as Platform Chemicals for Synthesis of Thermoplastic Bio-based Polyurethanes." In Food Composition and Analysis, 1–17. Apple Academic Press, 2014. http://dx.doi.org/10.1201/b16843-2.

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"Vegetable Oils As Platform Chemicals For Synthesis Of Thermoplastic Bio-based Polyurethanes." In Food Composition and Analysis, 19–36. Apple Academic Press, 2014. http://dx.doi.org/10.1201/b16843-6.

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Bueno-Ferrer, C., N. Burgos, and A. Jimenez. "VEGETABLE OILS AS PLATFORM CHEMICALS FOR SYNTHESIS OF THERMOPLASTIC BIO-BASED POLYURETHANES." In Chemistry and Physics of Complex Materials. Apple Academic Press, 2013. http://dx.doi.org/10.1201/b16302-3.

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"VEGETABLE OILS AS PLATFORM CHEMICALS FOR SYNTHESIS OF THERMOPLASTIC BIO-BASED POLYURETHANES." In Chemistry and Physics of Complex Materials, 43–64. Apple Academic Press, 2013. http://dx.doi.org/10.1201/b16302-8.

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Conference papers on the topic "Bio-based Thermoplastic Polyurethane"

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Karamikamkar, Solmaz, Sasan Rezaie, Hani E. Naguib, and Chul B. Park. "Bio-inspired polyethylene-based composite reinforced by thermoplastic polyurethane (TPU) fiber for aerogel production." In MATERIALS CHARACTERIZATION USING X-RAYS AND RELATED TECHNIQUES. Author(s), 2019. http://dx.doi.org/10.1063/1.5088318.

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