聚(丁二酸丁二醇酯己内酯)的扩链改性研究  

Studies on chain extension modification of PBSCL

作　　者：郝瑞[1] 余瑾[1] 周艺峰[1] 聂王焰[1] 

机构地区：[1]安徽大学化学化工学院,安徽省绿色高分子材料重点实验室,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2011年第4期79-85,共7页Journal of Anhui University(Natural Science Edition)

基　　金：安徽省高等学校自然科学研究基金重点资助项目(KJ2009A51);安徽大学“211工程”三期建设学术创新团队经费资助项目

摘　　要：以丁二酸、丁二醇、ε-己内酯、2,4-甲苯二异氰酸酯为原料,采用熔融缩聚法合成可降解的扩链改性共聚物.采用红外光谱、核磁共振测试对共聚物进行结构表征,确认了PBSCL的结构和组成;通过DSC对其热性能进行研究,表明共聚物具有较好的热性能,PBSCL的熔点随着ε-CL含量的增加而降低;同时研究了反应物配比及扩链反应温度对产物特性粘数的影响;共聚物的水降解结果表明其具有酸催化降解的特性.In this thesis,a series of biodegradable chain extended copolymers were synthesized by melt polycondensation from succinic acid,1,4-butanediol,ε-caprolactone and TDI.The chemical structure was characterized by Fourier transform infrared spectroscopic（FT-IR） and hydrogen nuclear magnetic resonance spectrum（1H-NMR）.The differential scanning calorimetry（DSC） test showed that the copolymers have good thermal properties,PBSCL had a decrease in melting point with the increasing content of ε-caprolactone.Also,the effects of temperature of the extended reaction and feed molar ratio on the inherent viscosity of copolymers were studied.The results of hydrolytic degradation showed that the rate of biodegradation of copolymers was faster in acid solution.

关 键 词：聚丁二酸丁二醇酯 Ε-己内酯 热性能 水降解 扩链改性 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]