天津工业大学学报2016，Vol.35Issue(3)：39-44,6.DOI:10.3969/j.issn.1671-024x.2016.03.008
相分离法制备多孔聚甲基丙烯酸甲酯（PMMA）微胶囊
Synthesis of porous poly(methylmethacrylate) microcapsules by internal phase separation
摘要
Abstract
N-isopropylacrylamide polymer (PNIPAm) as thermosensitive pore-foaming agent was introduced into the system for the synthesis of porous core-shell microcapsules by internal phase separation. The system is composed of n-octadecane (n-Oct), methylmethacrylate (MMA) and sodium salt of styrene-maleic anhydride copolymer (SMA) aqueous solution forming a micro emulsion. The effect of PNIPAm on the formation mechanism, surface morpholo-gies, and thermal stabilities of the MicroPCMs was studied by using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TG), respectively. The results indicate that adding PNIPAm into the system, the resulting microcap-sules have some irregular holes on the capsule shell. The size of the microcapsules is in the range of 2.0-4.0μm. The number of holes increases with the addition of PNIPAm, when the addition amount of 0.3-1.2 g. At the same time, the number of the holes decreases with the increase of the molecular weight of PNIPAm and the content of MMA, so only the PNIPAm with small molecular weight conducive to the synthesis of porous microcapsules.关键词
聚N-异丙基丙烯酰胺/相分离法/多孔PMMA微胶囊Key words
N-isopropylacrylamide polymer(PNIPAm)/phase separation method/porous PMMA microcapsules分类
化学化工引用本文复制引用
王建平,李丹,康召青,高阳,李伟,王学晨,张兴祥..相分离法制备多孔聚甲基丙烯酸甲酯（PMMA）微胶囊[J].天津工业大学学报,2016,35(3):39-44,6.基金项目
国家自然科学基金资助项目（50573058，51203113，51573135），航空科学基金项目（201229Q2002）；天津市科技计划项目 （）
