• 제목/요약/키워드: Poly(ethylene-co-vinylacetate) copolymer

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기능성 마이크로스피어의 개발(II) - 안료를 함유한 에틸렌-비닐아세테이트 공중합체의 마이크로스피어 제조와 특성 - (Development of functional microsphere(II) - Formation and Characteristics of Poly(ethylene-co-vinylacetate) Microsphere with Pigment -)

  • 이신희;박수민
    • 한국염색가공학회지
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    • 제17권4호
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    • pp.15-20
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    • 2005
  • Poly(ethylene-co-vinylacetate)(EVA) microspheres were prepared by thermally induced phase separation in toluene. The microsphere formation occurred by the nucleation and growth mechanism in metastable region. The effects of the polymer or pigment weight percentage and cooling rate on microsphere formation were investigated. The microsphere formation and growth were followed by the cloud point of the optical microscope measurement. The microsphere size distribution, which was obtained by particle size analyzer, became broader when the polymer concentration was higher, the pigment concentration and the cooling rate of EVA copolymer solution were lower.

기능성 마이크로스피어의 제조와 응용(II) 분산염료를 함유한 에틸렌-비닐아세테이트 중합체의 마이크로스피어 제조와 특성 (Preparation and Application of Functional Microsphere (II) Formation and Characteristics of Poly(ethylene-co-vinylacetate) Microsphere with Disperse Dye)

  • 이신희;조현;박수민
    • 한국의류산업학회지
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    • 제10권3호
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    • pp.371-376
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    • 2008
  • Poly(ethylene-co-vinylacetate) (EVA) microspheres were prepared by thermally induced phase separation (TIPS) in toluene. The microsphere formation occurred by the nucleation and growth mechanism in metastable region. The effects of the concentration and component of the polymer and cooling rate on microsphere formation were investigated. The microsphere formation and growth were followed by the cloud point of the optical microscope measurement. The microsphere size distribution, which was obtained by particle size analyzer, became broader when the polymer concentration was higher, the content of vinyl acetate in EVA copolymer was higher, the cooling rate of EVA copolymer solution were lower. The content of disperse dye in EVA microsphere was obtained by TGA thermal analysis, the dye content of EVA15 and EVA18 were 3.5 and 2.0 wt% respectively.