不同端基PBS的合成与降解性研究  

The Study on Synthesis and Biodegradability of PBS with Different End-group

作　　者：张昌辉[1] 翟文举[1] 寇莹[1] 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室陕西科技大学,陕西西安710021

出　　处：《塑料工业》2009年第10期13-15,共3页China Plastics Industry

基　　金：国家自然科学基金(50673056);陕西省自然科学基金(K03099)

摘　　要：利用熔融溶液相结合的方法,调节反应物比例得到了不同端基的聚丁二酸丁二醇酯(PBS)。利用滴定法测定不同样品的羧基值,用乌氏黏度计测定不同样品的特性黏度,降解实验测定降解率随时间的变化情况。结果显示,特性黏度大小的顺序是:等物质的量比(羧基封端(羟基封端,羧值大小的顺序是:羧基封端(等物质的量比(羟基封端,降解率大小的顺序是:羟基封端(羧基封端(等物质的量比。Through adjusting ratio of reactants, the poly butylene-glycol succinate （PBS） which had different end-group were synthesized by combining melting and solution method. Carboxyl value were obtained by titration method, intrinsic viscosity of different samples were obtained by Ubbelohde viscometer, the characteristics of the degradation rate with changing time were obtained by degradation experiments. The results showed that the order of intrinsic viscosity was equal ratio 〉 carboxyl group terminated 〉 hydroxyl group terminated, the order of carboxyl value was carboxyl group terminated 〉 equal ratio 〉 hydroxyl group termina- ted, and the order of degradation rate was hydroxyl group terminated 〉 carboxyl group terminated 〉 equal ratio.

关 键 词：聚丁二酸丁二醇酯 熔融溶液相结合法 端基 降解 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]