增韧、耐热聚乳酸交替层状材料的制备与性能研究  

Preparation and Properties of Toughened and Heat-resistant Poly(lactic acid)Materials with Alternating Multilayered Structure

作　　者：郭济伟 马燕琼[1] 吴宏[1] 郭少云[1] 

机构地区：[1]高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065

出　　处：《塑料工业》2015年第4期64-68,共5页China Plastics Industry

基　　金：国家自然科学基金项目(21174091和51121001);教育部“长江学者和创新团队发展计划资助”项目(IRT1163)

摘　　要：通过差示扫描量热、力学性能和热变形温度等测试研究了成核剂和聚乙二醇的加入对聚乳酸耐热性和韧性的影响。在此基础上,采用多层共挤出技术制备了16层的增韧层/耐热层交替层状聚乳酸材料,并对该材料的层结构、韧性和耐热性进行了表征。结果表明:制备的层状结构可以有效地同步提高聚乳酸的韧性和耐热性。In this paper, differential scanning calorimeter, mechanical properties and heat distortion temperature test were employed to investigate the effect of nucleating agent and polyethylene glycol on the heat- resistance and toughness of poly（lactic acid）. Furthermore, the poly（lactic acid） material with 16 layers of alternating structure of toughness layers/heat-resistance layers was prepared by muhilayered co-extrusion technology. The layer structure, toughness and heat-resistance property were investigated. The result showed that a significant improvement of both toughness and heat-resistance was obtained due to the unique alternating muhilayered structure.

关 键 词：多层共挤出 增韧 耐热 聚乳酸 Poly(lactic acid) 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]