PMMA encapsulated silica particles by dispersion polymerization in supercritical carbon dioxide

被引：15
作者：
Park, Eun Ju
Kim, Won Soo
Hwang, Ha Soo
Park, Chan
Lim, Kwon Taek [1 ]
机构：
[1] Pukyong Natl Univ, Div Image Sci & Engn, Pusan 608739, South Korea
[2] Pukyong Natl Univ, Div Mat Sci & Engn, Pusan 608739, South Korea
来源：
MACROMOLECULAR SYMPOSIA | 2007年 / 249卷
关键词：
dispersion polymerization; encapsulation; PMMA; silica; supercritical carbon dioxide;
D O I：
10.1002/masy.200750332
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
PMMA encapsulated silica particles were synthesized by the dispersion polymerization of MMA in supercritical carbon dioxide (scCO(2)). Nanosized silica particles pretreated with 3-(trimethoxysilyl) propyl methacrylate (gamma-MPS) were used as seeds in the polymerization. Polymeric stabilizer, poly(dimethylsiloxane)-b-poly (methacrylic acid) (PDMS-b-PMA) copolymer provided sufficient stabilization to the silica/PMMA composite latexes in scCO(2) to produce spherical particles. SEM and TEM analysis revealed that the composite particles have core-shell type morphology.
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收藏
页码：196 / 201
页数：6
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