Preparation of Nanocapsules Containing Phase Change Materials by Miniemulsion Polymerization

  • Oh, Keun Jin (Department of Chemical Engineering, Chungbuk National University) ;
  • Kim, Dae-Su (Department of Chemical Engineering, Chungbuk National University) ;
  • Lee, Jae Heung (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Choi, Kil-Yeong (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Lee, Changjin (Advanced Materials Division, Korea Research Institute of Chemical Technology)
  • 투고 : 2002.12.12
  • 심사 : 2003.01.20
  • 발행 : 2003.03.25

초록

Polystyrene nanocapsules containing octadecane as a core material were prepared by miniemulsion polymerization. The morphology and size of the nanocapsules were measured with varying the surfactant concentration, content of initiator, core/shell ratio and content of comonomer. The morphologies of the prepared nanoparticles were examined by a scanning electron microscope, a transmission electron microscope and the core material was confirmed by a differential scanning calorimeter. The particles below 70 nm in diameter were formed at a high surfactant concentration. The size of the nanoparticles was not significantly affected by the initiator content. With increasing the core/shell ratio and polar comonomer content, the particle size and its distribution were increased.

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