中国塑料 ›› 2014, Vol. 28 ›› Issue (02): 91-95 .DOI: 10.19491/j.issn.1001-9278.2014.02.018

• 塑料与环境 • 上一篇    下一篇

环氧类增容剂反应增容PLA/PBAT共混体系的研究

孟庆阳 翁云宣   

  1. 北京工商大学
  • 收稿日期:2013-11-22 修回日期:1900-01-01 出版日期:2014-02-26 发布日期:2014-02-26

Study on preparation of blending of PHBH/PBAT and its performance

Yunxuan Weng   

  • Received:2013-11-22 Revised:1900-01-01 Online:2014-02-26 Published:2014-02-26

摘要: 以环氧类增容剂(REC)为增容剂,采用双螺杆挤出机熔融共混制备聚乳酸(PLA)/聚对苯二甲酸己二酸丁二醇酯(PBAT)共混物。研究了增容剂对共混体系微观结构、力学性能和热性能的影响。结果表明,添加适量REC可以提高PLA与PBAT的相容性,改善PLA/PBAT共混体系的综合力学性能;REC用量为1.4份时共混体系呈现出良好的相容性,此时共混物冲击强度由268 kJ/m2增加到621 kJ/m2、断裂伸长率提高由222 %增加到357 %。

关键词: 聚乳酸, 聚对苯二甲酸己二酸丁二醇酯, 相容性, 增容剂

Abstract: An epoxy resin was introduced into PLA/PBAT blends as a compatibilizer by melt blending using a twin screw extruder. The effect of the compatihilizer on thermal performance, mechanical properties, and microstructure of PLA/PBAT blends were investigated. It showed that the interface bonding force in the blends was enhanced by the compatibilizer, and the comprehensive mechanical properties of the blend were increased greatly. An inclusion of 14 phr compatibilizer increased the impact strength and elongation at break from 268 kJ/m2 to 621 kJ/m2 and 222 % to 357 %, respectively.

Key words: polylactic acid, poly(butyleneadipatecoterephthalate), phase morphology, compatibilization effect