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Effect of surface modification of Fe3O4 nanoparticles on the preparation of Fe3O4/polystyrene composite particles via miniemulsion polymerization

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Abstract

Fe3O4 nanoparticles were modified by n-octadecyltrimethoxysilane (C18TMS) and 3-trimethoxysilylpropylmethacrylate (MPS). The modified Fe3O4 nanoparticles were used to prepare Fe3O4/polystyrene composite particles by miniemulsion polymerization. The effect of surface modification of Fe3O4 on the preparation of Fe3O4/polystyrene composite particles was investigated by transmission electron microscopy, Fourier transform infrared spectrophotometer (FT-IR), contact angle, and vibrating sample magnetometer (VSM). It was found that C18TMS modified Fe3O4 nanoparticles with high hydrophobic property lead to the negative effect on the preparation of the Fe3O4/polystyrene composite particles. The obtained composite particles exhibited asymmetric phase-separated structure and wide size distribution. Furthermore, un-encapsulated Fe3O4 were found in composite particles solution. MPS modified Fe3O4 nanoparticles showed poor hydrophobic properties and resulted in the obtained Fe3O4/polystyrene composite particles with regular morphology and narrow size distribution because the ended C=C of MPS on the surface of Fe3O4 nanoparticles could copolymerize with styrene which weakened the phase separation distinctly.

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Acknowledgments

This study was financially supported by the Shandong Province Natural Science Foundation (No. ZR2010BQ030, and No. Y2005B02), Shandong Scientific and Technical Items (GG4402056) and the Doctoral Foundation of Linyi University (No. BS201011).

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Authors and Affiliations

  1. School of Chemistry & Chemical Engineering, Linyi University, Linyi, 276000, Shandong, People’s Republic of China

    Feng Yan, Xiuwen Zheng, Zhaomei Sun & Aihua Zhao

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  1. Feng Yan
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  2. Xiuwen Zheng
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  3. Zhaomei Sun
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  4. Aihua Zhao
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Correspondence to Feng Yan or Aihua Zhao.

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Yan, F., Zheng, X., Sun, Z. et al. Effect of surface modification of Fe3O4 nanoparticles on the preparation of Fe3O4/polystyrene composite particles via miniemulsion polymerization. Polym. Bull. 68, 1305–1314 (2012). https://doi.org/10.1007/s00289-011-0614-9

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  • DOI: https://doi.org/10.1007/s00289-011-0614-9

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