橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2007 Vol.30 No.1 P.10-13

橡胶技术网

新型可生物降解弹性体的制备与性能

丁涛  石锐  雷丽娟  刘全勇  田明  张立群 

摘 要:以聚乙二醇(PEG)和柠檬酸(CA)为单体,通过熔融缩聚制备了新型的可生物降解弹性体聚柠檬酸聚乙二醇[poly(PEG-co-CA),PEC],并通过改变后期交联时间得到了一系列透明柔软的弹性体.用傅里叶变换红外光谱、X射线衍射仪及差示扫描量热仪对PEC进行了初步表征,表明产物在室温下为无定形态,且玻璃化转变温度都在0 ℃以下;力学性能测试表明所得材料的弹性模量为0.25~1.91 MPa,扯断伸长率为239.4%~1 505.5%;在37 ℃和pH值为7.4的磷酸缓冲溶液中进行了体外降解实验,结果表明该弹性体为一种降解较快的材料(浸泡80 h后所有试样的降解都超过60%).同时发现其力学性能、吸水性能和降解性能可通过改变后期交联时间加以调节.
关键词:聚柠檬酸聚乙二醇;生物降解;制备;力学性能;吸水性能
分类号:TQ333.95  文献标识码:A

文章编号:1000-1255(2007)01-0010-04

Preparation and properties of a novel biodegradable elastomer

Ding Tao  Shi Rui  Lei Lijuan  Liu Quanyong  Tian Ming  Zhang Liqun 

基金项目:北京市自然科学基金重点资助项目(2061002).
作者简介:丁涛(1972-),男,博士.
作者单位:丁涛(北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029;河南大学,精细化学与工程研究所,河南,开封,475001) 
     石锐(北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029) 
     雷丽娟(北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029) 
     刘全勇(北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029) 
     田明(北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029) 
     张立群(北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京,100029) 

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收稿日期:2005年9月5日

修稿日期:2006年9月26日

出版日期:2007年1月15日