赖氨酸二乙酯扩链聚氨酯的制备与降解研究  

Preparation and degradation of polyurethane extended by lysine diethyl

作　　者：盛光佳[1] 王郡斌[1] 程树军[1] 

机构地区：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237

出　　处：《化工新型材料》2011年第7期73-75,共3页New Chemical Materials

基　　金：国家863项目(2007AA02Z450)

摘　　要：以1,6-六亚甲基二异氰酸酯(HDI)为硬段,聚碳酸酯二元醇(PCDL)为软段,赖氨酸二乙酯盐酸盐(Lys-OEt)为扩链剂合成了一种新型聚氨酯弹性体,并研究了聚氨酯膜在磷酸盐缓冲溶液和木瓜蛋白酶溶液中的降解情况。结果表明:聚氨酯在磷酸盐缓冲溶液(PBS)中的降解很慢,木瓜蛋白酶对聚氨酯的降解主要是作用于软硬段之间形成的酰胺和脲键上,降解方式以表面降解为主。A novel kind of polyurethane has been synthesized using PCDL as soft segment,HDI as hard segment,and Lys-OEt as chain extender.The degradation properties of the polymer films were investigated in PBS and papain solution.The results showed that Lys-OEt extendered polyurethane almost did not degrade in hydrolytic process and the degradation in papain solution mostly occurred in urethane bonds and urea bonds.The degradation process was surface degradation.

关 键 词：聚氨酯 赖氨酸二乙酯 扩链 降解 聚碳酸酯 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]