Core/Shell Polystyrene/Magnetite Hybrid Nanoparticles Fabricated by Pickering Emulsion Polymerization and Their Magnetorheological Response

被引：26
作者：
Chae, Hyun Sik [1 ]
Piao, Shang Hao [1 ]
Han, Wen Jiao [1 ]
Choi, Hyoung Jin [1 ]
机构：
[1] Inha Univ, Dept Polymer Sci & Engn, Incheon 22212, South Korea
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2018年 / 219卷 / 05期
基金：
新加坡国家研究基金会;
关键词：
Fe3O4; magnetorheological fluids; nanocomposites; Pickering emulsion; polystyrene; COATED MAGNETITE NANOPARTICLES; CARBONYL IRON PARTICLES; SUPERPARAMAGNETIC NANOPARTICLES; OXIDE NANOCOMPOSITES; COMPOSITE-PARTICLES; FLUIDS; BEHAVIOR; FIELD; SILICA; HYPERTHERMIA;
D O I：
10.1002/macp.201700408
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Soft-magnetic polystyrene (PS)/Fe3O4 core/shell composite nanoparticles are fabricated by surfactant-free Pickering emulsion polymerization using Fe3O4 nanoparticles as a solid stabilizer. The morphology of the synthesized PS/Fe3O4 particles consisting of a PS surface coated with Fe3O4 nanoparticles is examined by scanning electron microscopy and transmission electron microscopy. The thermal properties of Fe3O4 and PS/Fe3O4 are examined by thermogravimetric analysis, while the chemical bonding and composition of the nanocomposite are characterized by Fourier transform infrared spectroscopy and X-ray diffraction. The magnetorheological (MR) properties of the PS/Fe3O4 composite nanoparticles dispersed in silicone oil are analyzed using a rotational rheometer under an external magnetic field. The PS/Fe3O4-based MR fluids exhibit typical MR properties and a lower density compared to Fe3O4 nanoparticles, indicating the improved dispersion stability of the MR fluid compared to that of the Fe3O4 nanoparticle-based MR fluid.
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页数：7
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