Double-miniemulsion preparation of Fe3O4/poly(methyl methacrylate) magnetic latex

Authors

  • R. Y. Hong,

    Corresponding author
    1. College of Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, Suzhou 215123, China
    2. State Key Laboratory of Multiphase Reaction, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
    • College of Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, Suzhou 215123, China
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  • B. Feng,

    1. College of Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, Suzhou 215123, China
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  • X. Cai,

    1. College of Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, Suzhou 215123, China
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  • G. Liu,

    1. College of Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, Suzhou 215123, China
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  • H. Z. Li,

    1. State Key Laboratory of Multiphase Reaction, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
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  • J. Ding,

    1. IBM, HYDA/050-3 C202, 3605 Highway 52 North, Rochester, Minnesota 55901
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  • Y. Zheng,

    1. Department of Chemical Engineering, University of New Brunswick, Fredericton, N.B. E3B 5A3, Canada
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  • D. G. Wei

    1. Center for Nanoscale Systems, School of Engineering & Applied Sciences, Harvard University, Cambridge, Massachusetts 02139
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Abstract

Magnetic poly(methyl methacrylate) (PMMA) microspheres were prepared by double-miniemulsion polymerization. First, oleic acid coated magnetite particles synthesized by means of coprecipitation were dispersed into octane to obtain a ferrofluid. The ferrofluid and MMA were emulsified to form O/W emulsion, respectively. Subsequently two miniemulsions were mixed together for polymerization. The obtained magnetic polymer particles were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction, and thermogravimetry. The results showed that oleic acid coated magnetite particles were well encapsulated in PMMA. The effects of initiator dosage and monomer concentration on the conversion of MMA were also investigated. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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