期刊
RSC ADVANCES
卷 8, 期 7, 页码 3910-3918出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra13086d
关键词
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资金
- National Natural Science Foundation of China [51703203]
- Zhejiang Provincial Natural Science Foundation of China [LQ17E030004]
- Science Foundation of Zhejiang Sci-Tech University (ZSTU) [16012172-Y]
- Zhejiang Provincial Top Key Academic Discipline of Chemical Engineering and Technology of Zhejiang Sci-Tech University [CETT2016004]
- Young Researchers Foundation of Zhejiang Provincial Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University [2016QN09]
This paper presents a simple and controllable method for the synthesis of monodisperse nanometer-sized organic-inorganic raspberry-like polystyrene (PS)-SiO2 nanocomposite particles (NCPs) via Pickering emulsion polymerization, by simply using a silane coupling agent, 3-(trimethoxysilyl) propyl methacrylate (MPS), as an auxiliary monomer and controlling its hydrolysis/condensation processes and amount. In this method, when MPS was stirred in acidic water with styrene (St) for a period of time, and then a basic silica solution added, raspberry-like PS-SiO2 NCPs were directly obtained after the polymerization. The whole process needs neither surface treatment for the silica particles nor additional surfactants or stabilizers. We propose that a silica-stabilized Pickering emulsion is formed through Si-OH reaction between the hydrolysis/condensation products of MPS distributed on the St droplets surface and the silica particles.
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