高聚物负载双金属催化剂催化二氧化碳-氧化环己烯的共聚反应  

COPOLYMERIZATION OF CARBON DIOXIDE AND CYCLOHEXENE OXIDE BY POLYMER-SUPPORTED BIMETALLIC CATALYSTS

作　　者：张南燕[1] 陈立班[1] 杨淑英[1] 余爱芳[1] 何树杰[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650

出　　处：《高分子学报》2000年第6期741-745,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金!(基金号 2 93412 0 )

摘　　要：由CO2 氧化环己烯 (CHO)配位催化共聚制得高Tg 的脂肪族聚碳酸亚环己基酯 ,并用IR、NMR和DSC等进行了表征 ,用TG对聚合物的热稳定性进行分析 .加入环氧丙烷 (PO)三元共聚并分析PO/CHO摩尔比对Tg 的影响 .Aliphatic poly(cyclohexene carbonate),which has a T g of 120℃,was sythesized by coordinate\|catalytical copolymerization of carbon dioxide and cyclo\|hexene oxide(CHO) with polymer\|supported bimetallic catalyst (PBM) and was characterized by IR,NMR and DSC measurements.The thermal degradation of copolymers was studied by TG measurement,and found that 5% and 50% weight loss temperature ( t 5% , t 50% ) were 177℃,273℃,respectively.The copolymerization of CO\-2,cyclohexene oxide (CHO) and propylene oxide (PO) was also studied to evaluate the influence of mole percentage of cyclohexene oxide (CHO) on T g.“End capping”can raise t 5% to 210℃.The copolymerization of CO\-2,cyclohexene oxide (CHO) and phenyl isocyanate (PI) can increase the intrinsic viscosity (\[ η ]) but decrease the T g. [WTHZ]

关 键 词：二氧化碳 氧化环己烷 共聚 聚碳酸亚环己基酯 

分 类 号：O633.1[理学—高分子化学] O643.36[理学—化学]