文献类型：期刊文献

英文题名：Rubber-toughened PLA blends with low thermal expansion

作者：Jiang, Jiandi[1];Su, Lili[1];Zhang, Kun[1];Wu, Guozhang[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：128

期号：6

起止页码：3993

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20143600051181);WOS:【SCI-EXPANDED(收录号:WOS:000316696000060)】；

基金：This research was supported by grants from the National Natural Science Foundation of China (50873033).

语种：英文

外文关键词：blends; compatibilization; morphology; thermal properties

摘要：In this study, poly (lactic acid) (PLA) blended with various rubber components, i.e., poly (ethylene-glycidyl methacrylate) (EGMA), maleic anhydride grafted poly(styrene-ethylene/butylene-styrene) triblock elastomer (m-SEBS), and poly(ethylene-co-octene) (EOR), was investigated. It was observed that EGMA is highly compatible due to its reaction with PLA. m-SEBS is less compatible with PLA and EOR is incompatible with PLA. Electron microscopy (SEM and TEM) revealed that a fine co-continuous microlayer structure is formed in the injection-molded PLA/EGMA blends. This leads to polymer blends with high toughness and very low linear thermal expansion both in the flow direction and in the transverse direction. The microlayer thickness of rubber in PLA blends was found to play key roles in reducing the linear thermal expansion and achieving high toughness of the blends. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013