Formation of Poly(methacrylate ester) Microspheres by Polymerization in Supercritical Carbon Dioxide

DOI
  • Zhang Donghui
    Innovation Plaza Fukuoka, Japan Science and Technology Corporation, Japan
  • Matsuyama Kiyoshi
    Department of Chemical Engineering, Fukuoka University, Japan
  • Mishima Kenji
    Department of Chemical Engineering, Fukuoka University, Japan

Abstract

A formation method of polymeric microspheres is reported using supercritical carbon dioxide (SC-CO2). The polymer microspheres were synthesized by the precipitation copolymerization of glycidyl methacrylate (GMA) with methyl methacrylate, n-butyl methacrylate or diethylaminoethyl methacrylate, methacrylic acid(MAA) or 2-hydoxyethyl methacrylate (2-HEMA) in SC-CO2. Scanning electron microscopy (SEM) showed that the products were spherical microparticles with the addition of MAA and/or 2-HEMA as the monomer. The mean diameter of the particles is 0.5 - 5 µm. During the copolymerization of GMA with MAA and/or 2-HEMA in SC-CO2, it was found that MAA and 2-HEMA served as a stabilizer for GMA. The obtained polymer particles were applied as powder coatings, which have been attracting much attention as environmentally benign coating systems. The resulting coatings have a smooth and coherent film. The particle size and morphology were controlled by changing the pressure, temperature, and initial GMA/MAA and/or GMA/2-HEMA concentration ratio. The initial concentration ratio was more effective than the other factors in controlling the particle size.

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Details 詳細情報について

  • CRID
    1390001205727505280
  • NII Article ID
    130005052638
  • DOI
    10.11491/apcche.2004.0.578.0
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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