二氧化碳基共聚物(英文)  

Recent Advances in Carbon Dioxide Based Copolymer

作　　者：秦玉升[1] 王献红[1] 王佛松[1] 

机构地区：[1]中国科学院长春应用化学研究所生态环境高分子材料院重点实验室,长春130022

出　　处：《化学进展》2011年第4期613-622,共10页Progress in Chemistry

基　　金：supported by National Natural Science Foundation of China(grant No.20634040 and 50903084);National Key Technologies R&D Program(grant No.2007BAE42B01)

摘　　要：二氧化碳共聚物利用温室气体二氧化碳为原料,具备良好的生物降解性能,成本相对较低,是一种理想的全降解型塑料品种。近年来,随着催化剂技术的发展,二氧化碳共聚物工业化进程已经起步,但催化剂成本较高、聚合周期较长、聚合物的热学和力学性能不理想等因素限制了其推广和应用。本实验室制备的无机物负载稀土三元催化剂,催化活性提高了36%。同时利用提高分子量、交联和制备区域规整聚合物的方法成功地提高了聚碳酸丙烯酯的分子间相互作用力,实现了二氧化碳共聚物的热学、力学性能的改善。Carbon dioxide based copolymers utilize greenhouse gas CO2 and can be applied in research and industry, which makes it become one of the emerging low cost biodegradable plastics. This paper summarizes our achievements in improvement of catalytic activity for propylene oxide （PO）-CO2 copolymerization and enhancing molecular chain interaction of poly（propylene carbonate） （PPC）. The supported strategy on rare-earth ternary catalyst showed 36% increase in catalytic activity. Three strategies including increasing molecular weight of PPC, crosslinking of PPC and preparation of regio-regular PPC were used to enhance molecular chain interaction of carbon dioxide based copolymers, which were effective in improving the thermal and mechanical performances of CO2 copolymers.

关 键 词：二氧化碳 聚碳酸丙烯酯 稀土三元催化剂 分子间相互作用 

分 类 号：O631.2[理学—高分子化学]