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Synthesis and electrorheological response of nano-sized laponite stabilized poly(methyl methacrylate) spheres

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Abstract

Poly(methyl methacrylate) (PMMA) nanospheres were fabricated via surfactant-free Pickering emulsion polymerization, in which hydrophilic laponite clay was used to stabilize the emulsions of methyl methacrylate dispersed in distilled water. These synthesized PMMA nanoparticles, of which the surface is compactly wrapped by laponite clay, are observed, as confirmed by scanning electron microscopy and transmission electron microscope images. Fourier-transform infrared spectra and thermogravimetry analysis confirm the chemical composition, thermal property, and mass percent of the laponite located on the surface of PMMA particles. Finally, laponite-wrapped nano-sized PMMA spheres were adopted as an electrorheological material. By using an optical microscope, the chain-like structure was observed when an external electric field was applied. In addition, the ER performance was also examined via a rotational rheometer equipped with a high voltage generator.

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Acknowledgement

This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Korea (2008).

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Inha University, Incheon, 402-751, South Korea

    Fei Fei Fang, Ji Hye Kim & Hyoung Jin Choi

  2. Electronics and Telecommunications Research Institute, Daejeon, 305-700, South Korea

    Chul Am Kim

Authors
  1. Fei Fei Fang
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  2. Ji Hye Kim
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  3. Hyoung Jin Choi
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  4. Chul Am Kim
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Corresponding author

Correspondence to Hyoung Jin Choi.

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Fang, F.F., Kim, J.H., Choi, H.J. et al. Synthesis and electrorheological response of nano-sized laponite stabilized poly(methyl methacrylate) spheres. Colloid Polym Sci 287, 745–749 (2009). https://doi.org/10.1007/s00396-009-2030-3

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  • DOI: https://doi.org/10.1007/s00396-009-2030-3

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