氧化环己烯
环氧化物
高分子化学
邻苯二甲酸酐
催化作用
三苯基膦
热分解
环己烯
聚合
化学
单体
开环聚合
共聚物
聚酯纤维
亚胺离子
聚合物
有机化学
作者
Yanchuan Zhou,Ranlong Duan,Xiang Li,Xuan Pang,Xianhong Wang,Xuesi Chen
标识
DOI:10.1002/asia.201701048
摘要
A dinuclear Salph-Al complex/bis(triphenylphosphine)iminium chloride catalyst system was synthesized and employed for cyclohexene oxide (CHO) and CO2 copolymerization. The catalyst system had an excellent selectivity of 99 % for carbonate linkages and the resultant poly(cyclohexene carbonate) (PCHC) had a high glass transition temperature (Tg ) of 123.8 °C and a thermal decomposition temperature (5 % weight loss; Td 5 % ) of 265 °C. Furthermore, this catalyst system was active in the polymerization of phthalic anhydride (PA) and epoxides. Poly(CHO-alt-PA) was completely alternating, and had improved thermal properties (Tg =142.7 and Td 5 % =295 °C) compared with PCHC. The Tg values of the polyesters could be adjusted by addition of PO to the CHO/PA reaction system. For the CHO/PO/PA terpolymerization, CHO and PO participated concurrently and proportionally in the chain growth and the obtained terpolyesters had tunable Tg values from 62.8 to 142.7 °C depending on the CHO/PO feed ratio.
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