화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.18, No.12, 1142-1147, December, 2010
DOI10.1007/s13233-010-1202-9  Export Citation
Controlling Morphology of Polymer Microspheres by Shirasu Porous Glass (SPG) Membrane Emulsification and Subsequent Polymerization: from Solid to Hollow
Jeongwoo Lee, Deok Ryul Hwang, Sang Eun Shim†, and Young-Mok Rhym1
  • Department of Chemical Engineering, Inha University, Incheon, 402-751, Korea
  • 1Korea Institute of Materials Science, Gyeongnam, 641-841, Korea
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In this study, the solid, porous, and hollow polymer microspheres were prepared using a simple and novel production method based on Shirasu porous glass (SPG) membrane emulsification and suspension polymerization. With the SPG membrane, uniform-sized emulsion monomer droplets containing divinyl benzene (DVD), styrene (St), hexadecane (HD), and an initiator were prepared in an aqueous phase using a membrane emulsification technique. The aqueous phase contained hydroquinone (HQ) as a water-soluble inhibitor and polyvinylpyrrolidone (PVP) as a stabilizer. The morphology of the particles was affected by the stabilizer, St/DVB ratio, hexadecane amount, and initiator amount. Through this study, the porous polymer microspheres were achieved when the HD content was 30wt% relative to the monomer and the hollow polymer microspheres was achieved when the HD content was more than 62.5 wt% relative to the monomer. These results highlight the phase separation speed between polystyrene (PSt) and HD.
Keywords:Shirasu porous glass (SPG) membrane emulsification;polystyrene;microspheres;morphology;hollow.
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