Effect of oxygen plasma treatment on tensile strength of date palm fibers and their interfacial adhesion with epoxy matrix
| Autor: | Mohammad Hossein Ahmadi, Maryam Gholami, Mohammad Ali Tavanaie, Mohammad Khajeh Mehrizi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
oxygen plasma test date palm fibers (dpfs) Interfacial adhesion 02 engineering and technology Epoxy matrix 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences epoxy 0104 chemical sciences adhesion microbond test Ultimate tensile strength Oxygen plasma TA401-492 Materials Chemistry Ceramics and Composites Composite material 0210 nano-technology Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Science and Engineering of Composite Materials, Vol 25, Iss 5, Pp 993-1001 (2018) |
| ISSN: | 2191-0359 0792-1233 |
| DOI: | 10.1515/secm-2017-0102 |
| Popis: | In recent years, natural fibers have received much attention from various industrial applications. As these fibers are lightweight, nonabrasive, low cost, ecofriendly and biodegradable, they can be sometimes considered as alternatives to synthetic fibers in lightweight composite structures. In this work, date palm fibers (DPFs) were treated by oxygen plasma at various plasma discharge power and exposure time. The effects of plasma treatment on tensile strength of DPF and interfacial adhesion between DPF and epoxy were determined by single fiber tensile test and microbond test, respectively. Scanning electron microscopy was used to investigate the surface morphologies of DPFs before and after the plasma treatment. The functional groups on the surface were studied by attenuated total reflectance-Fourier transform infrared spectroscope (ATR-FTIR). Decrease in hemicellulose and lignin content of DPF was indicated in ATR-FTIR spectra of the treated sample with plasma treatment. The results show that plasma treatment cleans the fiber surface and increases the surface roughness by etching effect. Moreover, fiber surface modification significantly improves tensile properties of DPFs and interfacial shear stress (IFSS) of fiber/matrix. However, the effects of plasma power and exposure time on tensile properties and IFSS values of DPFs are not found significant. Moreover, Weibull statistics show that plasma treatment could not decrease the variability in fiber strength due to the nature of fibers. |
| Databáze: | OpenAIRE |
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