Structure-properties of super-tough PLA alloy with excellent heat resistance
Structure-properties of super-tough PLA alloy with excellent heat resistance
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DOI：
10.1016/j.polymer.2010.06.045
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发表时间：
2010-08-04
期刊：
影响因子：
4.6
通讯作者：
Inoue, Takashi
中科院分区：
文献类型：
--
作者：
Hashima, Kazuhiro;Nishitsuji, Shotaro;Inoue, Takashi
采用反应性增容剂聚（乙烯-甲基丙烯酸缩水甘油酯）（EGMA）对氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物（SEBS）进行共混增韧。通过进一步引入具有高玻璃化转变温度的韧性聚合物聚碳酸酯（PC），改善了材料的高温性能和耐热老化性能。在透射电子显微镜、差示扫描量热法和动态力学分析的基础上，PLA/PC/SEBS/EGMA = 40/40/5/5（wt.比例），似乎来自于SEBS的负压效应，其扩张由PLA和PC组成的塑料基质以增强局部段运动。(C)2010爱思唯尔有限公司版权所有。
Poly(lactic acid) (PIA) was toughed by blending hydrogenated styrene-butadiene-styrene block copolymer (SEBS) with the aid of reactive compatibilizer, poly(ethylene-co-glycidyl methacrylate) (EGMA). The high temperature property and thermal aging resistance were improved by further incorporating polycarbonate (PC), the ductile polymer with high glass transition temperature. On the basis of transmission electron microscopy, differential scanning calorimetry, and dynamic mechanical analysis, the outstanding toughness and aging resistance of the 4 component alloy: e.g., PLA/PC/SEBS/EGMA = 40/40/5/5 (wt. ratio), seems to come from the negative pressure effect of SEBS that dilates the plastic matrix consisting of PLA and PC to enhance the local segment motions. (C) 2010 Elsevier Ltd. All rights reserved.