摘要
以丙交酯和乙交酯为原料,PEG-800为引发剂,采用开环聚合方法合成了具有不同单体比例的共聚物。通过IR、1 H-NMR表征了聚合物的结构,应用GPC技术分析了不同单体组成对共聚物分子量及其分布的影响;通过接触角测定的方法考察了不同单体比例组成对其共聚物的亲水性能影响;通过吸水实验,表明随着乙交酯含量的增强,共聚物的吸水性增强。只要引发剂的含量一定,单体丙交酯、乙交酯摩尔比为3∶1的聚合物膜的吸水性能较好。
The copolymers were synthesized with L-lactide and glycolide in the different mole ratios by ring-opening method using PEG-800 as initiator. The copolymers were characterized by Infrared Spectroscopy,Ill-Nuclear Magnetic Resonance, Gel Permeation Chromatography, Contact Angle Measurement and Thermo gravimetric Analysis. The results showed that the hydrophilic of copolymers were improved when PEG-800 used as initiator, and the co-monomer GA also affect the hydrophilic of copolymers. Water absorption were tested, the results showed that with co-monomer GA increasing, water absorption was enhanced. As far as the same contain initiator PEG-800,the copolymer films with L-lactide and glycolide in the mole ratio of 3： 1 had better the property of water absorption.
出处
《高分子通报》
CAS
CSCD
北大核心
2012年第6期83-87,共5页
Polymer Bulletin
基金
河南省科技攻关项目(102102210114)
关键词
聚乙二醇
共聚物
亲水性
Poly （ethylene glycol）
Copolymers
Hydrophilic
