Plasma treatment effect on the surface energy of carbon and carbon fibers |
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| Authors: | J.B. Donnet M. Brendle T.L. Dhami O.P. Bahl |
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| Affiliation: | 1. Institut de Science des Matériaux de Mulhouse, Université de Haute Alsace, CNRS-UMR 7361, 15 rue Jean Starcky, 68057 Mulhouse, France;2. Airbus Defense and Space, Avenue du Général Niox, 33165 Saint Médard en Jalles, France;1. Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, NL, 64849, Mexico;2. Centro de Investigación en Materiales Avanzados S. C. (CIMAV-Unidad Monterrey), NL, Mexico;3. University of California, Department of Biomedical Engineering, Irvine, CA, 92697, USA;4. University of California, Department of Mechanical and Aerospace Engineering, Irvine, CA, 92697, USA;1. Department of Chemical Engineering, National Cheng Kung University, Taiwan;2. Department of Chemical and Materials Engineering, Southern Taiwan University of Science and Technology, Taiwan;1. Solar Energy Research Institute, Yunnan Normal University, Kunming 650500, PR China |
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| Abstract: | The surface energy dispersive (γDS) and polar (γPS) components of carbon model surfaces (bal planes, prismatic surfaces, vitreous carbon) and of carbon fibers (high strength and high modulus, respectively) were determined systematically before and after plasma treatment. The method used is essentially based on the wetting contact angle measurements within two liquids. In all cases (γPS) is markedly increased by the plasma treatment. For carbon fibers, with increasing plasma treatment duration (γPS) is increasing toward a limiting value (-30 mJ/m2) while (γDS) is depressed toward low values (-10 mJ/m2). The parallel evolution of surface topography is followed by SEM observations. The changes in surface energy of carbon model surfaces is also discussed. |
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| Keywords: | Carbon fibers surface energy vitreous carbon plasma treatment contact angle |
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