相分离法制备聚碳酸酯/聚乳酸复合微球与调控  

Preparation and Control of PC/PLA Composite Microsphere via Phase Separation

作　　者：邱丽清 刘杭忠 刘俊劭 QIU Li-qing;LIU Hang-zhong;LIU Jun-shao(College of Ecology and Resources Engineering,Fujian Provincial Bamboo Engineering Technology Research Center,Fujian Key Laboratory of Eco-lndustrial Green Technology,Wuyi University,Wuyishan 354300,China)

机构地区：[1]武夷学院生态与资源工程学院,福建省竹材工程技术研究中心,福建省生态产业绿色技术重点实验室,武夷山354300

出　　处：《高分子通报》2021年第7期65-70,共6页Polymer Bulletin

基　　金：福建省中青年教师教育科研项目(JAT190764);福建省自然科学基金项目(2018J01518)。

摘　　要：聚碳酸酯(PC)、聚乳酸(PLA)及三氯甲烷(CHCl3)混合作为油相,聚乙烯醇(PVA)溶液作为水相,通过相分离法制备PC/PLA复合微球。研究CHCl3浓度、水油比、PVA质量分数及PC/PLA质量配比对形成的PC/PLA复合微球形貌、结构的影响。实验结果表明:最佳的相分离实验条件为CHCl3浓度为2g/mL、水油比为4∶1、PVA质量分数为1%及PC/PLA质量配比为1/1时通过SEM观察到粒径分布均匀、规则、光滑的复合微球。在适宜的条件下,PC和PLA分子链间作用力相当,扩散能力强,协同一致地结晶,促进成核-结晶而制备PC/PLA复合微球。The mixture of Polycarbonate(PC), polylactic acid(PLA) and trichloromethane(CHCl3) were accounted for the oil phase and polyvinyl alcohol(PVA) solution was acted as the aqueous phase, which were prepared by phase separation for PC/PLA composite microspheres. The factors of CHCl3 concentration, water-oil ratio, PVA mass fraction and PC/PLA ratio on the morphology and structure were investigated. The results showed that the composite microspheres with small particle size, uniform distribution and surface are formed when the concentration of CHCl3 was 2 g/mL, water/oil mass ratio was 4∶1, PVA mass fraction was 1% and PC/PLA mass ratio are 1/1. Under the appropriate conditions, PC and PLA intermolecular chains have the same intermolecular force and strong diffusion ability, and the PC/PLA composite microspheres are prepared by synergistic and consistent crystallization, which promotes nucleation-crystallization.

关 键 词：聚碳酸酯 聚乳酸 复合微球 相分离 

分 类 号：TQ424[化学工程] TB332[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]