Synthesis and characterization of copolymers of poly(m-xylylene adipamide) and poly(ethylene terephthalate) oligomers by melt copolycondensation
Synthesis and characterization of copolymers of poly(m-xylylene adipamide) and poly(ethylene terephthalate) oligomers by melt copolycondensation
复制标题
熔融共聚聚己二酰间苯二甲酰胺与聚对苯二甲酸乙二醇酯低聚物共聚物的合成与表征
DOI：
10.1016/j.cjche.2016.04.003
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发表时间：
2016-09-01
影响因子：
3.8
通讯作者：
Liu, Di
中科院分区：
文献类型：
--
作者：
Bi, Fenglei;Shao, Jianqiang;Liu, Di
采用熔融共缩聚法制备了聚(间二甲基己二酰胺)/聚对苯二甲酸乙二醇酯(MXD6/PET)共聚物，在260℃下与1~5wt%的低聚对苯二甲酸乙二醇酯(PET)齐聚物熔融缩聚成MXD6齐聚物。共聚物的热行为表明，MXD6/PET共聚物的熔融温度随低聚物含量的增加而降低，结晶温度随低聚物含量的增加而升高。加入5wt%低聚物的共聚物的平衡温度T-m(0)为251.8℃，与纯MXD6的平衡温度非常接近。力学性能测试表明，MXD6/PET共聚物的拉伸和冲击强度比纯MXD6有显著提高，冲击断口表面的微纤丝结构显示出延性断裂的特征。(C)2016年中国化学工业与工程学会，化学工业出版社。版权所有。
Poly(m-xylylene adipamide)/poly(ethylene terephthalate) (MXD6/PET) copolymers are synthesized by melt copolycondensation with 1-5 wt% low molecular weight PET oligomers into the MXD6 oligomers at 260 degrees C. FR-IR and H-1 NMR analysis results indicate that the interchange reaction has occurred between MXD6 oligomers and PET oligomers. The thermal behavior of copolymers shows that the melting temperature of MXD6/PET copolymers decreases with the increasing of amount of PET oligomers, while the crystallization temperature accordingly increases. And the equilibrium temperature T-m(0) is evaluated to be 251.8 degrees C for the copolymers with 5 wt% PET oligomer adding, which is very close to that of neat MXD6. The tensile and impact strength of MXD6/PET copolymers are significantly improved than that of pure MXD6 by mechanical properties test, and the microfibril structure in the impact fracture sample's surface reveals the feature of ductile fracture. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.