Magnetic Polystyrene Nanocomposites Reinforced with Magnetite Nanoparticles

Authors

  • Xingru Yan,

    1. Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA
    2. Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA
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  • Qingliang He,

    1. Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA
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  • Xi Zhang,

    1. Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA
    2. Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA
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  • Hongbo Gu,

    1. Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA
    2. Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA
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  • Haoran Chen,

    1. Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
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  • Qiang Wang,

    1. College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
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  • Luyi Sun,

    1. Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
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  • Suying Wei,

    Corresponding author
    1. Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA
    • Suying Wei, Department of Chemistry and Biochemistry, Lamar University, BeaumontTX 77710USA

      Zhanhu Guo, Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, BeaumontTX 77710USA

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  • Zhanhu Guo

    Corresponding author
    1. Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA
    • Suying Wei, Department of Chemistry and Biochemistry, Lamar University, BeaumontTX 77710USA

      Zhanhu Guo, Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, BeaumontTX 77710USA

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Abstract

Polystyrene (PS)/magnetite (Fe3O4) polymer nanocomposites (PNCs) are successfully synthesized by a solvent extraction method. Scanning electron microscopy reveals that the nanoparticles are well distributed in the PS matrix with 5, 10, and 20 wt% without obvious agglomeration. Fourier transform infrared spectroscopy analysis indicated that the PS/Fe3O4 PNCs are synthesized with strong interaction between PS and nanoparticles. The thermogravimetic analyzer and microscale combustion calorimetry reveal an enhanced thermal stability and reduced flammability. The differential scanning calorimetry demonstrates both glass transition temperature (Tg) and melting temperature (Tm) increased with increasing the Fe3O4 nanoparticle loading. The observed monotonically decreased complex viscosity indicates a strong shear thinning behavior in the PNCs; meanwhile, the percolation takes place in the low frequency range (0.1–1 Hz) when the nanoparticles are introduced in the matrix. The Tg of the PS/Fe3O4 nanocomposites determined from the dynamic mechanical analysis shifts to a higher temperature compared with that of pure PS. Enhanced dielectric properties relate to the Fe3O4 NP loadings. In addition, the PS/Fe3O4 PNCs exhibit superparamagnetic behavior at room temperature.mame201300208-gra-0001

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