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극성고분자를 첨가한 폴리프로필렌(I) -구호와 특성 -
손태원,김학묵,김영훈,이남순,전옥화 한국섬유공학회 2002 한국섬유공학회지 Vol.39 No.2
In order to develop dyeable polypropylene fibers, polypropylene-polar polymer blends and their blend fibers, which were prepared via melt blending of polypropylene(PP) with ethylene-vinyl acetate copolymer containing 28 wt% of vinyl acetate(EYA(28)) and 38 wt% of vinyl acetate (EVA(38)) and phenolic resin novolac (PRN), at various compositions, were studied. Solubility parameter, thermal property, flow behavior. mechanical property, morphology, and miscibility of the blends were investigated. The blends of PP/EVA(28) exhibited enough compatibility to give a blend having no clear phase seperation and had excellent fiber forming ability. It was found that additive polymers could be dispersed without phase separation in the order of EVA(28) > EVA(38) > PRN and they affected the mechanical properties of PP. PP/EVA(38) and PP/PRN blends showed considerable decrease in flow and mechanical properties compared to those of pure PP. But PP/EVA(28) blends did not show property.