Fabrication of polymeric hollow spheres having macropores by a quenching and sublimation process

Sang Hyuk Im, O. Ok Park, Moo Hyun Kwon

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4 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)518-522
Number of pages5
JournalMacromolecular Research
Volume11
Issue number6
DOIs
Publication statusPublished - 2003 Dec
Externally publishedYes

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Keywords

  • Freeze-drying
  • Hollow spheres
  • Macropores
  • Porous materials

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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