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Electrolyte effect on the particle characteristics prepared by soap-free emulsion polymerization

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Abstract

Monodisperse micron-sized polystyrene (PS) spheres were successfully obtained using a single stage soap-free emulsion method in aqueous media mixed with ethanol (co-solvent) containing NaCl as the electrolyte. The optimum conditions for preparing the monodisperse PS microspheres, using soap-free emulsion polymerization in a water/ethanol mixture with an electrolyte, were studied. The presence of the co-solvent and electrolyte controlled the particle dispersion stability during the polymerization. The microspheres formed using PS, with a weightaverage diameter of 2.6 εm, coefficient of variation of 5.3% and zeta potential of −15.1 eV, were successfully obtained in the presence of 0.1 wt% NaCl, 10 wt% monomer, 0.1 wt% initiator and 95/5 (g/g) of a water/ethanol mixture reacted at 70°C for 24 h.

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Authors and Affiliations

  1. Department of Chemical Engineering, Inha University, 402-751, Incheon, Korea

    Seungtak Han, Kangseok Lee, Sang Eun Shim, Prakash J. Saikia & Soonja Choe

  2. Department of Applied Chemistry, Kyungpook National University, 702-701, Daegu, Korea

    Inwoo Cheong

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  1. Seungtak Han
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  2. Kangseok Lee
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  3. Sang Eun Shim
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  4. Prakash J. Saikia
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  5. Soonja Choe
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  6. Inwoo Cheong
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Correspondence to Soonja Choe.

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Han, S., Lee, K., Shim, S.E. et al. Electrolyte effect on the particle characteristics prepared by soap-free emulsion polymerization. Macromol. Res. 15, 403–411 (2007). https://doi.org/10.1007/BF03218806

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  • DOI: https://doi.org/10.1007/BF03218806

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