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CHEMICAL MODIFICATION OF POLY (PHTHALAZINONE ETHER NITRILE) (PPEN): SYNTHESIS OF PPEN– POLYDIMETHYLSILOXANE (PDMS) BLOCK COPOLYMERS
关键字：CHEMICAL,MODIFICATION,POLY,PHTHALAZINONE,ETHER,NITRILE,PPEN,SYNTHESIS,PPEN,POLYDIMETHYLSILOXANE,PDMS,BLOCK,COPOLYMERS,
Block copolymers containing hard polycarbonate (PC), or polysulphonic, and soft organosiloxane fragments in the macromolecule possess a wide spectrum of useful properties 1. One of the most attractive of them is selectivity of gas ...
http://www.polymer.cn/research/dis_info1710 |
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Microcellular Foaming of Polypropylene/Polydimethylsiloxane Blends with Supercritical Carbon Dioxide
关键字：microcellular foam, PP/PDMS blends, supercritical carbon dioxide
This work is aimed at studying the foaming behavior of polypropylene (PP)/polydimethylsiloxane (PDMS) blends with supercritical carbon dioxide (scCO2). Three kinds of PP/PDMS blends were prepared by using three brands of PP with differ...
http://www.polymer.cn/research/dis_info5025 |
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Microcellular Foaming of Polypropylene/Polydimethylsiloxane Blends with Supercritical Carbon Dioxide
关键字：microcellular foam, PP/PDMS blends, supercritical carbon dioxide
This work is aimed at studying the foaming behavior of polypropylene (PP)/polydimethylsiloxane (PDMS) blends with supercritical carbon dioxide (scCO2). Three kinds of PP/PDMS blends were prepared by using three brands of PP with differ...
http://www.polymer.cn/research/dis_info5025 |
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High toughness induced by wormlike-nanostructure in epoxy thermoset containing amphiphilic PDMS‐PCL block copolymers
ABSTRACT: The modification of epoxy composites through the construction of nanostructures via self-organization of block copolymers has become a hot topic. In this research, high toughness epoxy thermoset was prepared through constructing wormlike-nanostructure by incorporating amphiphilic polydimethylsiloxane-block-poly(ε-caprolactone) block copolymer. The fracture toughness of subsequent epox...
http://www.polymer.cnt//ss/zouhuawei/publicationsshow_13562.html |
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Patterned Fibers Embedded Microfluidic Chips Based on PLA and PDMS for Ag Nanoparticle Safety Testing
1
http://www.polymer.cnt//ss/liuyaowen/publicationsshow_9772.html |
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Surface modification of silica and its compounding with polydimethylsiloxane matrix: interaction of modified silica filler with PDMS
The present work involved a thorough study on
silane-modified silica filler with special focus on its
chemical interaction with polydimethylsiloxanes (PDMS)
and the structural model of the modified filler. The samples
prepared by addition of modified silica were characterized
by Fourier transform infrared spectroscopy (FTIR), specific
surface test, scanning electron microscopy (SEM) and
flu...
http://www.polymer.cnt//ss/jason/publicationsshow_3860.html |
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可生物降解多嵌段共聚物P(LLA-mb-BSA)的制备与性能
关键字：可生物降解聚合物，多嵌段共聚物，聚乳酸，扩链，増韧塑料，热塑性弹性体
略
http://www.polymer.cn/research/sy_info19518 |
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动态硫化热塑性弹性体相态结构形成机理,结构-性能关系及产业化应用
关键字：动态硫化，热塑性硫化橡胶，共混，相态，纳米粒子
动态硫化共混技术，是指将大量橡胶(>60%)与少量热塑性树脂(<40%)机械共混时，橡胶相同时发生化学交联，并被剪切破碎成大量的橡胶微粒，分散在少量呈连续相的热塑性塑料中的加工过程。采用该技术制备的热塑性弹性体(也称热塑性硫化橡胶TPV)，可解决传统交联橡胶的回收和再利用问题。关键的科学问题和技术难点：如何在快速的机械共混过程中，同时实现橡塑两相的精细分散、橡胶相的高度交联及剪切破碎、橡塑两相相态反转(即大量橡...
http://www.polymer.cn/research/sy_info19341 |
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加工条件对新型聚醚酯多嵌段共聚物的性能影响
关键字：聚醚酯，多嵌段共聚物，交替共聚物，弹性体，弹性-塑性转变
聚醚酯弹性体是由脂肪族聚醚作为软段，芳香族聚酯作为硬段组成的弹性体材料。其具有良好的耐蠕变性，较强的机械强度，优良的耐疲劳、抗挠曲、耐化学品及耐热性能等优点。目前通用的聚醚酯弹性体材料由低分子量的聚醚二醇和聚酯的双官能团单体进行缩合共聚合合成，得到的是无规共聚产物，存在聚合物结构不明确，反应后存在均聚物，以及反应分子量较难提高等问题。
http://www.polymer.cn/research/sy_info19326 |
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含氟两亲性大分子单体的合成及其N-乙烯基单体辅助熔融接枝
关键字：苯乙烯类热塑性弹性体，含氟聚乙二醇，N-乙烯基单体辅助熔融接枝
采用N-乙烯基吡咯烷酮(NVP)作为辅助接枝单体,利用熔融接枝法将直链型(“I”型)和“Y”型2种含氟聚乙二醇大分子单体(fPEGA)键合到苯乙烯类热塑性弹性体(STPE)分子链上,以降低STPE的疏水性。深入考察了接枝反应参数和fPEGA的化学结构对接枝反应的影响。研究表明:当VP/fPEGA 摩尔比大于2.0时,fPEGA 的接枝效率可达55%以上;丙烯酸酯类单体的接枝活性明显高于甲基丙烯酸酯;由于空间位阻效应,“Y”型含氟PEG 的接枝效率低于直链型单体...
http://www.polymer.cn/research/sy_info17646 |
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