Increasing the Hydrophobicity of a PP Film Using a Helium/CF4 DBD Treatment at Atmospheric Pressure |
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| Authors: | N. De Geyter R. Morent L. Gengembre C. Leys E. Payen S. Van Vlierberghe E. Schacht |
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| Affiliation: | (1) Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering, Ghent University, Jozef Plateaustraat 22, 9000 Ghent, Belgium;(2) Unité de Catalyse et Chimie du Solide, UMR CNRS 8181, Université des Sciences et Technologies de Lille, Bat. C3, Cité Scientifique, 59655 Villeneuve d’Ascq, France;(3) Biomaterials Research Group, Department of Organic Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281, S4, 9000 Ghent, Belgium |
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| Abstract: | Plasma surface modification is widely used to tailor the surface properties of polymeric materials. Most treatments are performed using low pressure plasma systems, but recently, atmospheric dielectric barrier discharges (DBDs) have appeared as interesting alternatives. Therefore, in this paper, an atmospheric He + CF4 DBD is used to increase the hydrophobicity of a polypropylene (PP) film. The surface characterization of the PP film is performed using contact angle measurements, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). Results show that the hydrophobic properties of the polymer films are greatly enhanced after plasma treatment as evidenced by an increased contact angle. The incorporation of fluorine on the surface is significant (45 at%), demonstrating the ability of the used DBD set-up to generate fluorine-containing functional groups on the PP surface. |
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| Keywords: | Dielectric barrier discharge Hydrophobicity CF4 Polypropylene film |
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