Synthesis and Characterization of Novel Semiaromatic Copolyamides Bearing Both Polar Hydroxyl and Unsaturated Allyl Substituents
Synthesis and Characterization of Novel Semiaromatic Copolyamides Bearing Both Polar Hydroxyl and Unsaturated Allyl Substituents
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带有极性羟基和不饱和烯丙基取代基的新型半芳族共聚酰胺的合成与表征
DOI：
10.1002/pola.28405
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发表时间：
2017-02
期刊：
影响因子：
--
通讯作者：
Wan Xinhua
中科院分区：
文献类型：
--
作者：
Wang Wenbin;Qi Xiang;Zhang Fei;Zhu Yingdan;Wan Xinhua
以1，8-辛二胺、对苯二甲酰氯和2，5-双烯丙氧基对苯二甲酰氯为原料，通过界面聚合制备了一系列新型半芳香族聚酰胺-聚（辛二酰胺）-聚（辛二酰胺）-聚（辛二酰胺在产率和所得聚合物的分子量方面的聚合条件进行了优化。通过固态Claisen重排反应，将这些聚合物转化为目标大分子聚（辛烯双酰胺）-反式-聚[辛烯（2，5-二羟基-3，6-二烯丙基）双酰胺]（CRPA 8 T-x），并用H-1 NMR和FT-IR进行了表征。虽然APA 8 T-x仅溶于非常有限的溶剂，但CRPA 8 T-x在极性溶剂中的溶解度显著提高，尤其是对于具有高含量的那些。由于羟基的极性，CRPA 8 T-x显示出比APA 8 T-x改善的亲水性。用CRPA 8 T-x作为施胶剂处理芳纶纤维，可明显提高芳纶纤维与环氧树脂的界面粘结力。在1，1，2，2-四氯乙烷和苯酚（40：60，w/w）的混合物中用0.5wt%CRPA8T-75溶液施胶的纤维表现出界面剪切强度比裸纤维最大增加60%。由于其制备简单，易于通过双功能取代基进行进一步改性，从而大大拓宽了半芳香聚酰胺的应用范围。(C)2016 Wiley Periodicals，Inc.
A series of novel semiaromatic (co) polyamides, poly(octylene terephthalamide)-ran-poly[octylene 2,5-bis(allyloxy)terephthalamide] (APA8T-x, x represents the molar fraction of allyloxy containing structure unit), were prepared via the interfacial polymerization of 1,8-diaminooctane, terephthaloyl chloride, and 2,5-bis(allyloxy) terephthaloyl chloride. The polymerization conditions were optimized in terms of the yields and the molecular weights of the resultant polymers. These polymers were converted to the target macromolecules, poly(octylene terephthalamide)- ran-poly[octylene (2,5-dihydroxy-3,6-diallyl)terephthalamide] (CRPA8T-x), through solid state Claisen rearrangement reaction, as characterized by H-1 NMR and FT-IR spectroscopies. While APA8T-x was only soluble in very limited solvents, the solubility of CRPA8T-x in polar solvents improved remarkably, especially for those with high counit content. Due to the polarity of hydroxyl group, CRPA8T-x showed an improved hydrophilicity than APA8T-x. The treatment of aramid fibers with CRPA8T-x, as sizing agents, enhanced obviously their interfacial adhesion toward epoxy resin. The fibers sized with 0.5 wt% CRPA8T-75 solution in the mixture of 1,1,2,2-tetrachloroethane and phenol (40: 60, w/w) exhibited a maximum increase of 60% in interfacial shear strength than the naked fibers. The easy preparation and the facility for the further modification through the dual functional substituents may greatly widen the application of semiaromatic polyamides. (C) 2016 Wiley Periodicals, Inc.
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影响因子：
6.7
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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