Improvement of Interfacial Adhesion of Glass Fiber/Epoxy Composite by Using Plasma Polymerized Glass Fibers |
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| Authors: | Kutlay Sever Mehmet Sarikanat Haci Ali Gülec Mehmet Mutlu ?smail Hakk? Tavman |
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| Affiliation: | 1. Department of Mechanical Engineering , Dokuz Eylul University , ?zmir, Turkey;2. Department of Mechanical Engineering , Ege University , ?zmir, Turkey;3. Department of Food Engineering , Yuzuncu Yil University , Van, Turkey;4. Plasma Aided Bioengineering and Biotechnology Research Group (PABB), Engineering Faculty , Hacettepe University , Ankara, Turkey |
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| Abstract: | This study intends to produce plasma polymer thin films of γ-glycidoxypropyltrimethoxysilane (γ-GPS) on glass fibers in order to improve interfacial adhesion of glass fiber-reinforced epoxy composites. A low frequency (LF) plasma generator was used for the plasma polymerization of γ-GPS on the surface of glass fibers at different plasma powers and exposure times. X-ray photoelectron spectroscopy (XPS) and SEM analyses of plasma polymerized glass fibers were conducted to obtain some information about surface properties of glass fibers. Interlaminar shear strength (ILSS) values and interfacial shear strength (IFSS) of composites reinforced with plasma polymerized glass fiber were evaluated. The ILSS and IFSS values of non-plasma polymerized glass fiber-reinforced epoxy composite were increased 110 and 53%, respectively, after plasma polymerization of γ-GPS at a plasma power of 60 W for 30 min. The improvement of interfacial adhesion was also confirmed by SEM observations of fractured surface of the composites. |
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| Keywords: | Glass fiber Interlaminar shear strength Plasma polymerization X-ray photoelectron spectroscopy (XPS) |
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