직접 플루오르화에 의한 폴리프로필렌 필름의 표면개질

최정봉; 노재성; Jeongbong Choi; Jaeseong Rho

Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.7, 679-684, November, 2002

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직접 플루오르화에 의한 폴리프로필렌 필름의 표면개질

Surface Modification of Polypropylene Films by Direct Fluorination

최정봉^†, 노재성¹

동의대학교 화학공학과, 부산 614-714
¹충남대학교 정밀공업화학과, 대전 305-764

Jeongbong Choi^†, and Jaeseong Rho¹

Department of Chemical Engineering, Dong Uui University, Busan 614-714, Korea
¹Department of Fine Chemical Engineering and Chemistry, Chungnam National University, Daejeon 305-764, Korea

E-mail:

초록

F₂ 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 -CF₂ 및 -CF₃기가 증가하여 젖음성이 감소되었다. 한편, 플루오르화에 의해서 폴리프로필렌 필름의 표면이 거칠게 전이되었다.

The surface of polypropylene film was modified by F₂ 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 -CF₂ and -CF₃ 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.

Keywords:fluorination;surface modification;wettability;surface energy

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[2] Myung HS, Polym. Sci. Technol., 4(2), 104 (1993)

[3] Vacondellos AS, Oliveira JAP, Baumhardt-Neto R, Eur. Polym. J., 33(10-12), 1731 (1997)

[4] Biederman H, Slavinska D, Surf. Coat. Technol., 125, 371 (2000)

[5] Tidjani A, Arnaud R, Polymer, 36(14), 2841 (1995)

[6] Schonherr H, Hruska Z, Vancso GJ, Macromolecules, 31(11), 3679 (1998)

[7] Panov AG, Gruver V, Fripiat JJ, J. Catal., 168(2), 321 (1997)

[8] Gupta V, Nakajima T, Ohzawa Y, Iwata H, J. Fluor. Chem., 112, 233 (2001)

[9] U.S. Patent, 2,811,468 (1957)

[10] Carstens PAB, Marais SA, Thompson CJ, J. Fluor. Chem., 104, 97 (2000)

[11] Kharitonov AP, J. Fluor. Chem., 103, 123 (2000)

[12] duToit FJ, Sanderson RD, J. Fluor. Chem., 98, 107 (1999)

[13] Sharts CM, J. Chem. Ed., 45(3), 185 (1978)

[14] Hayes LJ, J. Fluor. Chem., 8, 69 (1976)

[15] Palasantzas G, deHosson JM, Acta Mater., 49, 3533 (2001)