摘要
研究了芳香族聚碳酸酯(PC)/聚乳酸(PLA)共混体系在催化剂作用下的反应性熔融共混,考察了催化剂对PC/PLA熔融反应的影响。根据共混体系扭矩变化、共混产物特性黏数和分子量分析、红外和核磁分析,发现催化剂能催化PC/PLA熔融共混体系两相之间的酯交换反应。扫描电镜照片表明,反应过程中PC-PLA共聚物的形成增加了两者的相容性。
The reactive melt blending of polycarbonate （PC） with polylactic acid （PLA） （80/20, mass ratio） m the presence of catalyst was performed in Haake for 15 min at 220 ℃. The effect of catalyst on melt blending of PC and PLA was investigated. According to the results of changes in equilibrium torque, intrinsic viscosity and molecular weight analysis, IR and ^1H-NMR analysis of blends, the catalyst could catalyze efficiently the transesterification between PC and PLA. The results of SEM photographs show the PC-PLA copolymers produced in the blending, which acted as compatibilizers, could improve the compatibility of PC/PLA blends.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第11期45-48,共4页
Polymer Materials Science & Engineering
基金
国家杰出青年科学基金资助(50525309)
关键词
聚碳酸酯
聚乳酸
共混
酯交换反应
相容性
polycarbonate
polylactic acid
blending
transesterification
compatibility
