衣康酸酐与L-丙交酯共聚物的制备与性能研究  

Preparation and properties of itaconic anhydride-based copolymers with L-lactide

作　　者：滕丽晶 张明飞[1] 高宗春 汪磊[1] 徐晓红[1] 聂王焰[1] 周艺峰[1] 陈鹏鹏[1] 

机构地区：[1]安徽大学化学化工学院,绿色高分子材料安徽省重点实验室,安徽合肥230601

出　　处：《安徽大学学报（自然科学版）》2015年第4期85-90,共6页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51403003);安徽大学大学生创新创业训练计划项目(201310357144)

摘　　要：以衣康酸酐(IAn)和L-丙交酯(LLA)为单体、辛酸亚锡为催化剂,采用熔融开环聚合的方法合成一种新型的生物基聚乳酸共聚物(IAn-PLLA).用1 H-NMR、GPC、DSC、TGA、XRD、水降解测试表征共聚物的结构与性能.1 H-NMR结果表明,合成的共聚物为预期产物;DSC和TGA分析表明,随着IAn摩尔比增大,IAnPLLA的熔点和玻璃化转变温度降低,但仍有较好的热稳定性;磷酸盐缓冲溶液(pH=7.4)中的降解测试结果表明,随着衣康酸酐含量的增加,共聚酯的降解速率显著提高.A novel biobased polylaetide copolymer （IAn-PLLA） was synthesized via melting ring-opening polymerization of itaconie anhydride （IAn） with L-lactide （LLA） in the presence of stannous octoate as a catalyst. The structure and properties of the prepared copolymers were confirmed with 1H-NMR, GPC, DSC, TGA, XRD and hydrolytic degradation test. 1H-NMR spectra showed that the synthetic copolymers were the expected products. DSC and TGA analysis indicated that the melting point （Tin） and glass transition temperature（T g） of IAn-PLLA decreased with the increasing of IAn reaction mole ratios, but they still had excellent thermal stability. The result of degradation tests in the phosphate buffer solution （pH=7.4） indicated that the degradation rate of copolymers had significantly increased with the increasing IAn content.

关 键 词：衣康酸酐 L-丙交酯 开环聚合 降解性能 

分 类 号：O633.14[理学—高分子化学]