Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Fabrication of Polymeric Hollow Spheres Having Macropores by a Quenching and Sublimation Process

  • Im, Sang-Hyuk (Department of Chemical & Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Park, O-Ok (Department of Chemical & Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kwon, Moo-Hyun (Department of Chemical Engineering, Woosuk University)
  • Published : 2003.12.01
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Abstract

We fabricated polymeric hollow spheres having macropores, which combine the advantageous properties of porous materials and hollow spheres. To fabricate such spheres, a polystyrene/methylmethacrylate solution was dispersed in water by vigorously stirring and then the suspension was quenched using liquid nitrogen. Water and methyl methacrylate present in the quenched suspension were readily sublimated by freeze-drying. Conclusively, the hollow-sphere structure and the macropores of its shell were created by the processes of liquid nitrogen-quenching and sublimation of methyl methacrylate domains within the shell, respectively.

Keywords

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