常压连续微波辐射法合成聚乳酸-聚乙二醇共聚物(英文)  

Continuous Microwave-Irradiated Synthesis of Poly (D,L-Lactide)-co-Poly(Ethylene Glycol) Copolymer Under Atmosphere

作　　者：张英民[1] 王鹏[1] 李悦[1] 雷海芬[1] 焦春艳[1] 韩宁 

机构地区：[1]哈尔滨工业大学市政环境工程学院绿色化学与技术研究中心,黑龙江哈尔滨150090

出　　处：《中山大学学报（自然科学版）》2007年第B06期130-131,138,共3页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：哈尔滨市科技攻关资助项目(2005AA4CS112)

摘　　要：常压条件下、连续微波辐射功率90W,辐射时间8min,合成了特性粘度为0.51dL.g-1的聚乳酸-聚乙二醇共聚物(PELA)。考察了聚乙二醇(PEG)浓度、聚合时间对共聚物特性粘度和收率的影响。此外,实验研究了连续微波炉与家用微波炉中反应体系的温升曲线。结果显示,相比于家用微波炉中的间歇微波辐射,连续微波辐射下反应体系温度上升平稳无突跃。Poly （D, L-lactide）-co-poly （ethylene glycol） copolymer （PELA） of Intrinsic viscosity 0. 51 dL · g^-1 had been prepared under continuous microwave-irradiation power of 90 W for 8 min at atmosphere. Effects of poly （ ethylene glycol ） （PEG） content, polymerization time on intrinsic viscosity and yield of PELA had been discussed. Furthermore, temperature rising behavior in reactants system was studied through copolymerization under continuous microwave oven and domestic microwave oven. The results showed that temperature of reactants system evolved smoothly without step under continuous microwave irradiation, which occurred under intermittent microwave irradiation in domestic microwave oven.

关 键 词：连续微波辐射 聚乳酸 聚乙二醇 共聚物 

分 类 号：TQ316.61[化学工程—高聚物工业]