二氧化碳和环氧乙烷共聚及共聚物的体外降解  

Copolymerization of Carbon Dioxide and Epoxy Ethane and Degradation in Vitro

作　　者：周统昌[1,2] 邹志强[1,2] 区菊花[1,2] 干建群[1] 张敏[1] 陈立班[1] 

机构地区：[1]中国科学院广州化学研究所,广东广州510650 [2]中国科学院研究生院,北京100039

出　　处：《高分子材料科学与工程》2012年第1期97-100,共4页Polymer Materials Science & Engineering

基　　金：广东省自然科学基金资助项目(9151065004000005);广东省工业攻关项目(2008B010600046)

摘　　要：文中利用双金属催化剂(DMC)催化二氧化碳和环氧乙烷共聚,催化效率最高达到1139g/g催化剂,远远高于以前报道,其中碳酸酯键含量最高可达50%。实验发现,催化剂浓度是影响催化效率的重要因素,而温度的高低基本决定了碳酸酯键含量的多少。文中还研究了聚碳酸亚乙酯的体外降解性能,在降解液中经历大约70 d后,共聚物几乎全部降解为二氧化碳和低分子量聚乙二醇。Copolymerization of carbon dioxide and ethylene oxide（EO） using Co-Zn double metal cyanide complex（DMC） catalyst was carried out and the highest catalytic efficiency could be 1139 g of polymer/g of catalyst,which was higher than reported ever before.And the highest carbonate content of the copolymer could be up to 50%.It is found that catalyst concentration is the important factor in high catalytic efficiency and temperature influences carbonate content.We also studied the degradation performance of poly（ethylene oxide） in vitro.About 70 days later,almost all the copolymer degraded into carbon dioxide and polyethylene glycol with low molecular weight.

关 键 词：聚碳酸亚乙酯 共聚反应 二氧化碳 体外降解 

分 类 号：TQ316.342[化学工程—高聚物工业]