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ISSN : 1225-0112(Print)
ISSN : 2288-4505(Online)
Applied Chemistry for Engineering Vol.13 No.7 pp.679-684
DOI :

Research Papers : Surface Modification of Polypropylene Films by Direct Fluorination

Jeong Bong Choi

Abstract

The surface of polypropylene film was modified by F_2 gas at various pressure and process time. The fluorinated surfaces were characterized by means of contact angles: analysis of functional groups: and surface morphology. Wettability of fluorinated surfaces depended on the fluorination pressure and time. Polar surface free energy and wettability of the surface fluorinated at 5 kPa for 5 min were increased by existence of -CF group. But -CF_2 and -CF_3 groups increased as the fluorination pressure and time increased, causing the wettability to decrease. By the means of fluorination, the surface of the polypropylene film became rougher.

연구논문 : 직접 플루오르화에 의한 폴리프로필렌 필름의 표면개질

최정봉,노재성

초록

F_2 가스를 이용하여 폴리프로필렌 필름의 표면을 플루오르화 압력과 시간을 변수로 개질하였고, 개질된 필름의 접촉각, 관능기 분석 및 표면형태를 관찰하였다. 플루오르화 개질된 폴리프로필렌 필름의 젖음성은 압력과 시간에 의존하였고, 플루오르화 조건이 5 kPa에서 5 min인 경우 -CF기가 개질된 표면에 부분적으로 존재함으로써 극성 표면자유에너지가 증가하여 젖음성이 다소 향상되었다. 그러나 압력과 시간이 증가함에 따라 -CF_2 및 -CF_3기가 증가하여 젖음성이 감소되었다. 한편, 플루오르화에 의해서 폴리프로필렌 필름의 표면이 거칠게 전이되었다.

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