天津工业大学学报2017，Vol.36Issue(1)：1-7,7.DOI:10.3969/j.issn.1671-024x.2017.01.001
聚甲基丙烯酸甲酯包覆水微胶囊的制备及性能
Preparation and characterization of microencapsulated water with poly(methyl methacrylate) as shell
摘要
Abstract
In order to optimize the microencapsulation process of water-soluble substances, and explore the influencing factors, microcapsules containing water were prepared by in-situ polymerization in inverse emulsion system with biocompatible poly (methyl methacrylate) as shell by free radical polymerization. The influence of core-shell ratio, volume ratio of oil to water, methacrylic acid and crosslinking agent on the properties of microcapsules were discussed. The morphologies, core-shell structure, particle size distribution, encapsulation efficiency, and thermal stabilities of the microcapsules were characterized by scanning electron microscopy(SEM), transmission electron microscope(TEM), laser scattering particle size distribution analyzer(LSPSDA), differential scanning calorimetry(DSC), and thermal gravimetric analysis(TG). Results showed that the spherical microcapsules had a core-shell structure, and the distribution of particle size was in 0.5-1.5μm. The morphology of the microcapsules was the most regular when the ratio of the core-shell was 1:1, the best volume ratio of oil to water phase was 10:1. The encapsulation efficiency increased by 20% and 30% respectively by adding crosslinking agent and methacrylic acid. The addition of crosslinking agent and methacrylic acid can improve the encapsulation effi-ciency significantly.关键词
反相乳液/原位聚合/水溶性囊芯/微胶囊Key words
inverse emulsion/in-situ polymerization/water-soluble substances/microcapsules分类
化学化工引用本文复制引用
王建平,魏尧,药健,王学晨,李伟,张兴祥..聚甲基丙烯酸甲酯包覆水微胶囊的制备及性能[J].天津工业大学学报,2017,36(1):1-7,7.基金项目
国家自然科学基金资助项目(50573058,51203113,51573135) （50573058,51203113,51573135）
航空科学基金项目(201229Q2002) （201229Q2002）
天津 市科技计划项目(09ZCKFGX02200) （09ZCKFGX02200）
