期刊
COLLOID AND POLYMER SCIENCE
卷 292, 期 12, 页码 3251-3259出版社
SPRINGER
DOI: 10.1007/s00396-014-3377-7
关键词
Raspberry-like; Composite; Microcapsules; Sulfonated polystyrene; Aniline
资金
- Education Department of Guangdong Province [cgzhzd0904]
- Science & Technology Department of Guangdong Province [08C26214402212]
- Taiyuan Institute of Technology
Raspberry-like composite particles and microcapsules were prepared with anionic sulfonated polystyrene (PSS) particles as templates and cationic aniline monomer as assembly medium. With the help of the sulfonated microgel shells, aniline and silica particles could not only adsorbed onto template surfaces but also go inward shells and finally form microcapsules with varied silica shell thickness. The sulfonation extent of PSS particles first climbed up and then decreased with sulfonation time due to the competition of sulfonation reaction and PSS chain detachment. The silica content in composite particles and shell thickness of microcapsules followed similar trend with sulfonation extent. The choice of aniline as assembly medium was checked by comparing with methyl methacrylate and [2-(methacryloyloxy) ethyl] trimethylammonium chloride, and it was found that the cationic and water-insoluble properties of aniline are both important for the composite efficiency.
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