Preparation and characterization of Fe3O4/polystyrene composite particles via inverse emulsion polymerization

被引:81
|
作者
Hong, R. Y. [1 ,2 ,3 ]
Feng, B. [1 ,2 ]
Liu, G. [1 ,2 ]
Wang, S. [4 ]
Li, H. Z. [3 ]
Ding, J. M. [5 ]
Zheng, Y. [6 ]
Wei, D. G. [7 ]
机构
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
[2] Soochow Univ, Key Lab Organ Synth Jiangsu Prov, Suzhou 215123, Peoples R China
[3] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase React, Beijing 100080, Peoples R China
[4] Soochow Univ, SIP, Dept Pharmaceut Sci, Suzhou 215123, Peoples R China
[5] IBM Corp, HYDA 050 3 C202, Rochester, MN 55901 USA
[6] Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada
[7] Harvard Univ, Ctr Nanoscale Syst, Sch Engn & Appl Sci, Cambridge, MA 02139 USA
关键词
Nanostructured materials; Chemical synthesis; Magnetization; Transmission electron microscopy TEM; IRON-OXIDE NANOPARTICLES; COATED MAGNETITE NANOPARTICLES; MINIEMULSION POLYMERIZATION; SUSPENSION POLYMERIZATION; MICROSPHERES; STYRENE; FLUIDS; ENCAPSULATION; LATEXES; MATRIX;
D O I
10.1016/j.jallcom.2008.09.060
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Superparamagnetic magnetite/polystyrene (PS) composite particles were prepared by inverse emulsion polymerization with water-based ferrofluid as dispersing phase and organic solvent and styrene (St) as continuous phase. The resultant brownish Fe3O4/PS emulsion showed magnetic behavior in an applied magnetic field. The obtained magnetic Fe3O4/PS microspheres were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and thermogravimetry (TG). The magnetic Fe3O4/PS microspheres with a diameter of 200 nm were observed. The results showed that magnetite particles were well encapsulated in PS and the composite particles have high magnetite contents, which were more than 15%. In addition, the influences of magnetic field intensity on the theological properties of ferrofluids were investigated using a rotating rheometer. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:612 / 618
页数:7
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