CAJ | 학술논문

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0.51 dL·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.
상압조건하、련속미파복사공솔90W,복사시간 8min,합성료특성점도위0.51 dL·g-1적취유산-취을이순공취물(PELA).고찰료취을이순(PEG)농도、취합시간대공취물특성점도화수솔적영향.차외,실험연구료련속미파로여가용미파로중반응체계적온승곡선.결과현시,상비우가용미파로중적간헐미파복사,련속미파복사하반응체계온도상승평은무돌약.
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.