聚乳酸合成研究进展  

Progress on the Synthesis Research of Poly(Lactic Acid)

作　　者：汪朝阳[1] 赵海军[1] 侯晓娜[1] 罗玉芬[1] 宋秀美[1] 

机构地区：[1]华南师范大学化学与环境学院化学系,广东广州510006

出　　处：《高分子材料科学与工程》2009年第3期162-165,共4页Polymer Materials Science & Engineering

基　　金：广东省自然科学基金博士科研启动基金(5300082);国家自然科学基金资助项目(20772035)

摘　　要：针对直接法和二步法合成聚乳酸的共性,从单体纯度、催化剂选择到共沸脱水、微波辅助、超临界流体介质,以及到固相聚合、反应挤出、扩链等各个方面,对近年来聚乳酸合成研究的新进展进行了综述,指出各种新方法、新技术的复合应用是提高聚乳酸分子量、降低其成本的关键。As a kind of important biodegradable material, poly（lactie acid） （PLA） is extensively applied in the field of biomedicine, fiber, and plastics. Based on the analysis of both the direct polycondensation of lactic acid （LA） and the two-step ring-opening polymerization of lactide, the new progress on the synthesis research of PLA was reviewed from monomer purity, catalyst choice, azeotropic dehydration, microwave assistance, supercritical fluid medium to solid state polymerization, reaction extrusion, and chain extension. In the future, the comprehensive adoption of all kinds of novel method and technology is the key to synthesize high molecular weight PLA with lower cost.

关 键 词：聚乳酸 合成 直接熔融聚合 丙交酯开环聚合 固相聚合 

分 类 号：TB39[一般工业技术—材料科学与工程]