不饱和脂肪族聚酯生物降解性的研究  

On biodegradation of unsaturated aliphatic polyesters

作　　者：邵芬娟[1] 杨群[1] 陆大年[1] 

机构地区：[1]教育部纺织纤维重点实验室,东华大学化学化工与生物工程学院应用化学系,上海201620

出　　处：《粘接》2009年第12期48-51,共4页Adhesion

基　　金：教育部"纺织化学与染整工程"创新团队合作课题

摘　　要：以1,4-反丁烯二酸和一缩二乙二醇(DEG)为原料,采用缩聚法合成端羟基不饱和聚酯,并采用红外光谱分析(FT-IR)、羟值、酸值、黏度等对所得聚合物进行表征,确认了其分子结构,对其降解性进行研究,并且与1,4-丁二酸与一缩二乙二醇合成的饱和脂肪族聚酯进行了对比。研究结果表明,不饱和脂肪族聚酯和饱和脂肪族聚酯的生物降解性差别不大,也就是双键的引入对其生物降解性没有大的影响;但是不饱和脂肪族聚酯膜经过高温处理后,双键会打开发生交联,而交联后的不饱和脂肪族聚酯的生物降解性变差,而且交联度越高,生物降解性越差。Biodegradable unsaturated aliphatic polyesters were prepared from fumaric acid and diethylene glycol by melt polycondensation method. The polyesters were characterized by Fourier Transform Infrared Spectrum （FT-IR）, hydroxyl value, acid value and intrinsic viscosity. Enzymatic degradation and cross-linking characterization were also investigated. The results showed that, there was almost no difference between the biodegradations of unsaturated aliphatic polyester and saturated aliphatic polyester prepared from succinic acid and diethylene glycol, but the biodegradation of unsaturated aliphatic polyester became worse after being cured under high temperatures. That is because the carbon-carbon double bond opened and cross-linked. It was also found that the higher the cross-linking degree, the worse the biodegradation.

关 键 词：不饱和脂肪族聚酯 生物降解性 交联度 双键转化率 

分 类 号：TQ323.42[化学工程—合成树脂塑料工业]