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Morphological Properties of Poly(ε-caprolactone) Nano/Microcapsules Prepared by Emulsion-diffusion Method

유화-확산법에 의해 제조된 폴리(ε-카프로락톤) 나노/마이크로캡슐의 형태적 특성

  • Kim, Hea-In (Dept. of Organic Material Science and Engineering, Pusan National University) ;
  • Jeong, Cheon-Hee (Dept. of Organic Material Science and Engineering, Pusan National University) ;
  • Park, Soo-Min (Dept. of Organic Material Science and Engineering, Pusan National University)
  • 김혜인 (부산대학교 유기소재시스템공학과) ;
  • 정천희 (부산대학교 유기소재시스템공학과) ;
  • 박수민 (부산대학교 유기소재시스템공학과)
  • Received : 2010.08.16
  • Accepted : 2010.09.08
  • Published : 2010.09.27

Abstract

Poly($\varepsilon$-caprolactone) nano/microcapsules(nmcPCL) containing phytoncide oil were synthesized by emulsion diffusion method using ethyl acetate and poly(vinyl alcohol) (PVA) as an organic solvent and an emulsion stabilizer respectively. The influence of the degree of saponofication of the PVA and the weight ratio of core to wall materials was investigated to design nanocapsules in terms of particle size, morphology, and emulsion stability. The encapsulated nmcPCL were characterized by FT-IR spectrometry, particle size analyzer and scanning electron microscope. Mean size of nanocapsules prepared with PVA with a degree of saponofication of 87% was smaller than those of PVA with a degree of saponofication of 98.5% and the mean particle size of the capsules decreased with increasing core/shell ratio.

Keywords

References

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