화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.30, No.5, 1142-1152, May, 2013
DOI10.1007/s11814-013-0031-x  Export Citation
Fabrication of superhydrophobic surfaces using structured colloids
Young-Sang Cho†, Jong Woo Moon1, Dong Chan Lim2, and Young Dok Kim3
  • Department of Chemical Engineering and Biotechnology, Korea Polytechnic University, 237, Siheung-si, Gyeonggi-do 429-793, Korea
  • 1Division of Powder and Ceramics, Korea Institute of Materials Science, 66, Sangnam-dong, Changwon, Gyeongnam 641-831, Korea
  • 2Materials Processing Division, Korea Institute of Materials Science, 66, Sangnam-dong, Changwon, Gyeongnam 641-831, Korea
  • 3Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
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We have introduced water-in-oil emulsion systems to generate confining geometries for the self-organization of monodisperse silica nanospheres as building block particles. Then, through the slow evaporation of emulsion phases by heating, these nanospheres were packed into structural colloids such as raspberry-shaped micro-particles. The suspension of colloidal clusters was deposited onto glass substrate followed by surface modification of fluorinecontaining silane coupling agent to produce superhydrophobic surface with dual scale roughness. Similar self-assembly approach was employed to fabricate macroporous micro-particles from composite micro-particles of polystyrene microspheres and antimony-doped tin oxide nanoparticles by calcination. After deposition of the porous particles and fluorine treatment with silane coupling agent, superhydrophobic surfaces which have potential applications such as self cleaning property could be obtained with contact angle of water larger than 150℃.
Keywords:Silica Supraparticles;Self-assembly;Superhydrophobic Coatings
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