生物可降解高分子形状记忆合金的研究和进展  

Recent progress in studies of biodegradable shape memory polymer alloys

作　　者：曾超[1] 张乃文 任杰[1,3] 

机构地区：[1]同济大学材料科学与工程学院纳米与生物高分子材料研究所,上海200092 [2]上海同杰良生物材料有限公司,上海200438 [3]同济大学先进土木工程材料教育部重点实验室,上海200092

出　　处：《科学通报》2011年第19期1497-1508,共12页Chinese Science Bulletin

基　　金：国家高技术研究发展计划(2006AA02Z248);上海市优秀学科带头人计划(07XD14029)资助

摘　　要：高分子形状记忆材料近年来吸引了许多研究者的目光,因其低廉的成本、优异的加工性能、良好的回复性、多变的力学和物理性能等优势迅速地发展起来.但随着石油紧缺和全球暖化等问题,开发绿色、可降解的生物高分子形状记忆材料成为新的发展趋势.其中,绿色材料聚乳酸以其优异的力学强度、生物降解性和生物相容性,在可降解的生物高分子形状记忆材料的研究和应用方面有很大的发展前景.本文主要就生物可降解高分子形状记忆材料的发展现状、形状记忆机理、材料选择和国内外最新研究进展等进行了介绍、评述和展望.Shape memory polymers have attracted increasing attention from researchers worldwide. Because of their low cost, remarkable recovery, advantageous mechanical and physical properties, and excellent processing performance, there has been rapid development of these materials in recent years. However, the usage of non-renewable petroleum-based chemicals for the synthesis and manufacture of commercial polymers has caused serious environmental pollution, and biodegradable and renewable materials are urgently required for industrial use. Poly（lactic acid） （PLA）, a biodegradable aliphatic polyester, has the advantage of being not only biodegradable but also renewable because the raw material, lactic acid, can be produced by microbial fermentation of biomass. PLA has attracted increasing attention from both academic researchers and technologists because of its potential applications as both a biomedical material and an environmentally friendly polymer. This paper focuses mainly on the development of biodegradable shape memory polymers. The shape memory mechanism, materials selection, and the latest research progress in biodegradable shape memory polymer alloys are also discussed. In addition, we offer suggestions for future studies of PLA-based biodegradable shape memory polymer alloys.

关 键 词：形状记忆 高分子 微相分离结构 生物可降解 聚乳酸 

分 类 号：TG139.6[一般工业技术—材料科学与工程]