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1,922 Newest Publications in polymer engineering and science

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Effects of loading conditions on the nanoindentation creep behavior of nafion 117 membranes

18-Jan-2018 | Re Xia, Hongjian Zhou, Zhennan Zhang, Runni Wu, Wen‐Ping Wu, Polymer Engineering and Science, 2018

In this work, nanoindentation tests on Nafion 117 membranes are conducted under three different sets of loading conditions. The effects of loading/unloading rate, peak load and holding period on the mechanical responses of membranes are analyzed, respectively. The results demonstrate that the ...

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Highly flame retardant and bio‐based rigid polyurethane foams derived from orange peel oil

18-Jan-2018 | C. Zhang, Sanket Bhoyate, M. Ionescu, P. K. Kahol, Ram K. Gupta, Polymer Engineering and Science, 2018

Limonene dimercaptan (LDM), an orange peel oil‐based derivative, and glycerol‐1‐allyl ether (GAE) were used to synthesize bio‐based polyol (LDM‐GAE) using one step photochemical thiol‐ene reaction. The synthesized polyol was used to prepare flame retardant polyurethane foams using dimethyl ...

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Reactive toughening of urea–formaldehyde resin with poly(vinyl alcohol) by formation of interpenetrating networks

13-Jan-2018 | Yalong Liu, Junling Yuan, Xiaowen Zhao, Lin Ye, Polymer Engineering and Science, 2018

A series of urea–formaldehyde/poly(vinyl alcohol) (UF/PVA) blends were prepared via in situ polymerization. During the synthesis process, intra‐ and intermolecular acetalization of PVA occurred, along with the addition and condensation reactions between urea and formaldehyde, resulting in the ...

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High‐Throughput Production With Improved Functionality and Graphitization of Carbon Fine Fibers Developed from Sodium Chloride‐Polyacrylonitrile Precursors

12-Jan-2018 | Mandana Akia, Lee Cremar, Manuel Seas, Jahaziel Villarreal, Alejandra Valdez, Mataz Alcoutlabi, Karen Lozano, Polymer Engineering and Science, 2018

Fine polyacrylonitrile (PAN) fibers were produced through a scalable centrifugal spinning process. Sodium chloride (NaCl) was added to the PAN‐dimethylformamide solution to decrease the surface tension and consequently promote a decrease in fiber diameter while increasing the fiber output. The ...

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Super toughened poly(trimethylene terephthalate) composite using flowable crosslink elastomer blend

10-Jan-2018 | Xilong Hu, Yan Wang, Junrong Yu, Jing Zhu, Zuming Hu, Polymer Engineering and Science, 2018

Super toughened poly(trimethylene terephthalate) (PTT) blend was obtained by melt blending of PTT with a flowable crosslinked elastomer blend. The elastomer blend was prepared through reaction between an epoxy contained ethylene acrylate copolymer (EMMA‐GMA) and an ethylene acrylic copolymer ...

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Modeling and optimization of waterproof‐breathable thermo‐regulating core‐shell nanofiber/net structured membrane for protective clothing applications

08-Jan-2018 | Massoumeh Rahimi, Javad Mokhtari, Polymer Engineering and Science, 2018

The mechanical and functional properties of thermo‐regulating hexadecane‐polyurethane (HD‐PU) nanofiber/net membrane (NFNM) with potential application in protective clothing were modeled and optimized. The optimum conditions for fabrication of the HD‐PU NFNM were obtained using response surface ...

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Investigation of aging performance of bio‐oil phenol‐formaldehyde resin with the treatment of artificial accelerated aging method

23-Dec-2017 | Yuxiang Yu, Pingping Xu, Jingchen Xing, Lufei Li, Jianming Chang, Polymer Engineering and Science, 2017

The aging performance of bio‐oil phenol‐formaldehyde (BPF) resin was investigated using artificial accelerated aging method. After the treatment, the variations on the mass and bonding strength of plywood with BPF resin were determined. The changes in the microstructure, functional groups, and ...

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AOTEMPO‐mediated dynamic vulcanization: Synthesis of impact‐modified polypropylene

23-Dec-2017 | Michael W. Bodley, J. Scott Parent, Polymer Engineering and Science, 2017

New chemistry for controlling the dynamics and yields of radical‐mediated polyolefin modifications is adapted to prepare impact‐resistant thermoplastic vulcanizates. Dynamic vulcanization of polypropylene (PP) + poly(ethylene‐co‐octene) (EOC) blends using small amounts of ...

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On creep, recovery, and stress relaxation of carbon fiber‐reinforced epoxy filament wound composites

22-Dec-2017 | José Humberto Almeida, Heitor L. Ornaghi, Natália Lorandi, Gerson Marinucci, Sandro Amico, Polymer Engineering and Science, 2017

This work encompasses an analytical procedure and experimental tests for the study of creep/recovery, stress relaxation, and viscoelastic behavior, focusing on the glassy state, of carbon fiber‐reinforced epoxy filament wound composites of distinct fiber orientation: [0]4, [30]4, and [60]4. The ...

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Improvement of compatibility and mechanical properties of the poly(lactic acid)/poly(butylene adipate‐co‐terephthalate) blends and films by reactive extrusion with chain extender

22-Dec-2017 | Xin Li, Xiangyu Yan, Jia Yang, Hongwei Pan, Guanghui Gao, Huiliang Zhang, Lisong Dong, Polymer Engineering and Science, 2017

Biodegradable poly(lactic acid)/poly(butylene adipate‐co‐terephthalate) (PLA/PBAT) blends and films were prepared by melt blending and blowing films technique in the presence of chain extender. The Joncryl ADR‐4370F (ADR) was used as the chain extender. The effect of ADR on the mechanical ...

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