화학공학소재연구정보센터
Polymer(Korea), Vol.22, No.6, 917-925, November, 1998
폴리프로필렌의 물리적인 개질(4): Polypropylene/Poly(vinyl alcohol-co-ethylene) 블렌드
Physical Modification of Polypropylene (4): Polypropylene/ Poly(vinyl alcohol-co-ethylene) Blends
초록
소수성 고분자인 polypropylene(PP)의 좋지 않은 물성 중의 하나인 젖음성(wettability)을 향상시키기 위해서, 본 연구에서는 PP와 poly(vinyl alcohol-co-ethylene) (EVOH) 블렌드에 의한 물리적 개질을 시도하였다. EVOH의 함량-10, 20, 30, 40, 50, 60, 70, 80, 90 wt%-에 따라 PP와 용융혼합시켜 각각 시료를 만들었고, 접촉각 측정과 대전압 측정으로 그 표면의 친수화 정도를 평가하였다. 그리고, 화학구조 조사, 역학적 성질 조사, 열적 분석 및 형태학적 관찰 등의 실험으로 EVOH의 함량에 따른 폴리프로필렌의 고유한 물성 변화를 알아 보았다. EVOH 함량이 증가함에 따라 PP의 우수한 성질이 전반적으로 저하되었지만 친수화의 정도는 증가되고 있음을 확인할 수 있었다.
An attempt was carried out to investigate a change of the surface property of polypropylene (PP) when it was blended with poly(vinyl alcohol-co-ethylene) (EVOH) at the various contents of EVOH; 10, 20, 30, 40, 50, 60, 70, 80, and 90 wt%. Prominently, PP/EVOH blends were evaluated over a contact angle measurement and an antistatic measurement for their surface property. Gerneral properties of the blends, viz, analysis of chemical structure, mechanical property, thermal analysis, melt-flow behavior, and morphological observation, would be also discussed in the results whether property depression of PP in the blends was occurred or not. The results showed that the surface property of the PP/EVOH blends was improved with increasing of EVOH contents. However, property depression of PP was thoroughly found in the PP/EVOH blends with increasing of EVOH contents.
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