Novel copolyesters based on poly(alkylene dicarboxylate)s: 1. Thermal behavior and biodegradation of aliphatic-aromatic random copolymers
Novel copolyesters based on poly(alkylene dicarboxylate)s: 1. Thermal behavior and biodegradation of aliphatic-aromatic random copolymers
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DOI：
10.1016/j.eurpolymj.2008.08.039
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发表时间：
2008-11-01
影响因子：
6
通讯作者：
Commereuc, Sophie
中科院分区：
文献类型：
--
作者：
Berti, Corrado;Celli, Annamaria;Commereuc, Sophie
为了提高聚丁烯1,12-十二烷二酸的热性能和力学性能，以1,4-丁二醇为原料，以1,12-十二烷二酸和对苯二甲酸的不同摩尔比为原料，制备了几种新型的脂肪族-芳香族无规共聚酯。样品经H-1 NMR表征，分子结构与存在的晶相、结晶度、玻璃化转变温度、力学行为和生物降解性相关。特别是，含有70 mol% PBT重复单元的共聚物显著提高了聚（1,12-十二烷基二甲酸丁烯）的热性能和力学性能，并保持了很高的热稳定性，但失去了聚（二羧酸亚烯）的生物降解性。因此，对于这类脂肪族-芳烃共聚物，必须根据需要仔细选择化学成分，以在良好的热性能和机械性能以及生物降解性之间达成妥协。(C) 2008 Elsevier Ltd版权所有。
In order to improve the thermal and mechanical properties of the poly(butylene 1,12-dodecanedioate), some novel aliphatic-aromatic random copolyesters have been prepared by starting from 1,4-butanediol and different molar ratio of 1,12-dodecanedioc acid and terephthalic acid. The samples were characterized by H-1 NMR and the molecular structure was correlated with the crystalline phase present, the level of crystallinity, the glass transition temperature, the mechanical behavior, and the biodegradability. In particular, the copolymer containing the 70 mol% of PBT repeating units notably improves the thermal and mechanical properties of the poly(butylene 1,12-dodecanedioate) towards those of PBT and maintains a very high thermal stability, but loses the biodegradability of the poly(alkylene dicarboxylate). Therefore, for this class of aliphatic-aromatic copolymers the chemical composition must be carefully chosen to reach a compromise between good thermal and mechanical performances and biodegradability, according to the necessity. (C) 2008 Elsevier Ltd. All rights reserved.