二氧化碳和环氧氯丙烷共聚物的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF ALIPHATIC POLYCARBONATES FROM CARBON DIOXIDE AND EPICHLOHYDRIN

作　　者：郭锦棠[1] 王新英[2] 杨俊红[3] 孙经武[2] 

机构地区：[1]天津大学一碳化工国家重点实验室,天津300072 [2]天津大学化工学院,天津300072 [3]天津大学电气自动化与能源工程学院,天津300072

出　　处：《高分子材料科学与工程》2003年第4期166-168,172,共4页Polymer Materials Science & Engineering

摘　　要：利用稀土络合催化体系催化二氧化碳 (CO2 )和环氧氯丙烷 (ECH)共聚反应 ,合成出新型高分子材料脂肪族聚碳酸酯 (ECHCO2 )。利用红外光谱、广角 X射线衍射法、热分析等对该共聚物进行了表征。通过聚合物的动态力学行为和应力 -应变分析 ,研究了 CO2 - ECH共聚物的力学性能。结果表明 ,该共聚物结构中含有环氧氯丙烷自聚链段和 ECH- CO2 共聚链段 ,ECHCO2 的玻璃化温度 Tg=5 9.4℃ 。The rare earth coordinated catalytic system was used to catalyze the copolymerization of CO 2 and ECH. Then the aliphatic polycarbonate ECH-CO 2 was synthesized. This copolymer was characterized by IR spectra, wide angle X-ray scattering spectra and thermal gravimety (TG). The mechanical properties of copolymer CO 2-ECH was studied by the analysis of dynamic mechanical behavior and stress-strain. The results show that there are two chains of polyepichlohydrin and ECH-CO 2 in the structure of copolymer, T g of ECH-CO 2 is 59.4 ℃, TG shows that there are two peaks which are the chain cleavage of carbonate and ether in the thermal degradation of copolymer.

关 键 词：二氧化碳 环氧氯丙烷 共聚物 合成 表征 稀土络合催化剂 脂肪族聚碳酸酯 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业] TQ316.342