聚乳酸耐热改性的研究进展  

Research Progress on Heat Resistant Modification of Polylactide

作　　者：李昊晨 张祥 龙云瑞 邢倩 李荣波[2] LI Hao-chen;ZHANG Xiang;LONG Yun-rui;XING Qian;LI Rong-bo(College of Chemstry and Materials Engineering,Beijing Technology and Business University,Beijing 100048,China;Petrochina Petrochemical Research Institute,Beijing 100195,China)

机构地区：[1]北京工商大学化学与材料工程学院,北京100048 [2]中国石油天然气股份有限公司石油化工研究院,北京100195

出　　处：《高分子通报》2024年第4期430-441,共12页Polymer Bulletin

基　　金：国家自然科学基金(基金号51403210);北京市自然科学基金(基金号2192015)。

摘　　要：聚乳酸(PLA)是一种兼具良好生物相容性、力学以及加工性能的生物基可降解脂肪族聚酯,因此,在医药、食品包装等领域得到广泛应用。然而,PLA结晶速率慢、所得制品结晶度低、耐热性差,严重制约了其在高温环境下的使用。本文综述了国内外聚乳酸耐热改性方面的研究进展,重点阐述通过化学共聚、交联、共混以及外场作用(热处理、拉伸)等手段提高PLA耐热性的方法,并对耐热聚乳酸材料的发展前景进行了展望。Polylactide(PLA)is a biodegradable polymer with excellent biocompatibility,mechanical properties,and processing properties,which has been widely used in fields such as medicine and food packaging.However,the slow crystallization rate,low crystallinity,and poor heat resistance of PLA seriously restrict its application in high-temperature environments.The research progress of heat-resistant modification of PLA at home and abroad is reviewed.The progress of improving the heat resistance of PLA by means of chemical copolymerization,crosslinking,blending and external field(heat treatment,stretching)is emphasized.The development prospect of heat-resistant polylactic acid materials is prospected.

关 键 词：聚乳酸 耐热性 结晶 共混 立构晶 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]