Effect of wood species on property and weathering performance of wood plastic composites |
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| Authors: | James S. Fabiyi Armando G. McDonald |
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| Affiliation: | 1. Department of Industrial Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;2. Department of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;1. Postdoctoral Research Fellow, University of Quebec in Abitibi-Temiscamingue (UQAT), 445 boulevard de l’Université, Rouyn-Noranda, Québec J9X 5E4, Canada;2. Professor, UQAT;3. Professor, École centrale de Paris, Grande Voie des Vignes, F-92 295 Chatenay-Malabry Cedex, France;4. Professor, Université Laval, 2425 rue de la Terrasse, Québec City, Québec G1V 0A6, Canada;1. Polymer PROcessing and Flow (P-PROF) Research Group, Division of Materials Technology, School of Energy, Environment and Materials, King Mongkut''s University of Technology Thonburi (KMUTT), Thungkru, Bangkok 10140, Thailand;2. V.P. Wood Co., Ltd., 25/5 Moo 4, Soi Suksawad 66, Bangmod, Thungkru, Bangkok 10140, Thailand;3. Department of Advanced Fibro-Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;1. Federal University of Rio Grande do Sul – UFRGS, School of Engineering, Laboratory of Polymeric Materials – LAPOL, Porto Alegre, Brazil;2. Federal University of Rio Grande do Sul – UFRGS, Institute of Biosciences, Department of Botany, Laboratory of Mycology, Porto Alegre, Brazil |
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| Abstract: | The effects of wood species on mechanical, thermal and accelerated weathering behaviors of high-density polyethylene based wood plastic composites (WPC) were investigated. The selected wood species are poplar, Douglas-fir, black locust, white oak, and ponderosa pine. Hybrid poplar and Douglas-fir based composite ranked highly in flexural properties. Thermogravimetric analysis indicated that thermal stability of the WPC is species dependent. The final decomposition of hemicelluloses in the hardwoods occurred at higher temperatures compared to that of softwoods. Color and chemical changes that occurred due to accelerated weathering were monitored using colorimetry and Fourier transform infrared spectroscopy. Weathered WPCs showed that color change and lightness increased with exposure time; degree of increase depends on wood species. WPC oxidation by weathering was assessed by carbonyl group concentration and was shown to increase with exposure. Hybrid poplar and ponderosa pine were shown to have good color stability among the wood species examined for WPC. |
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