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Enhanced interfacial properties of domestic aramid fiber-12 via high energy gamma ray irradiation |
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| Affiliation: | 1. School of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Islamabad, Pakistan;2. Department of Materials Science and Engineering, University of Sheffield, North Campus, Broad Lane, Sheffield S3 7HQ, United Kingdom;3. GIDS, Islamabad, Pakistan;4. Centre for Energy Systems, USAID Centre for Advanced Studies, National University of Sciences and Technology (NUST), Islamabad, Pakistan;5. Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, North Campus, Broad Lane, Sheffield S3 7HQ, United Kingdom |
| Abstract: | The high energy irradiation was used to modify domestic aramid fiber-12 (DAF12) in epoxy chloropropane. The properties of the interphase between DAF12 and epoxy matrix systems were optimized. Scanning electron microscopy was employed to characterize the surface morphology of DAF12 and high energy irradiated fibers (HEI-DAF12) and composites de-bonding section. Atomic force microscopy showed the original smooth surface disappeared. Single fiber pull-out tests revealed that the interfacial shear strength of HEI-DAF12/epoxy composite was substantially improved by 45.17% after irradiation in 400 kGy dose. Dynamic contact angle analysis indicated the increased total surface free energy. The changes of elemental composition investigated via X-ray Photoelectron Spectrometer verified the increase polar groups on fiber surface caused by high energy irradiation. |
| Keywords: | A. Aramid fiber A. Polymer–matrix composites (PMCs) B. Interface E. Surface treatments High energy irradiation |
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