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Preparation and Application of Functional Microsphere (II) Formation and Characteristics of Poly(ethylene-co-vinylacetate) Microsphere with Disperse Dye  

Lee, Shin-Hee (Dept. of Clothing & Textiles, Kyungpook National University)
Cho, Hyun (Dept. of Organic Material Science and Engineering, Pusan National University)
Park, Soo-Min (Dept. of Clothing & Textiles, Kyungpook National University)
Publication Information
Fashion & Textile Research Journal / v.10, no.3, 2008 , pp. 371-376 More about this Journal
Abstract
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.
Keywords
microsphere; particle size; thermally induced phase separation(TIPS); disperse dye; Poly(ethylene-co-vinylacetate) copolymer;
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