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http://dx.doi.org/10.5658/WOOD.2010.38.4.298

Water Absorption of Wood Flour-Polypropylene Composites: Effects of Wood Species, Filler Particle Size and Coupling Agent  

Kang, In-Aeh (Forest Resources Utilization Division, Korea Forest Research Institute)
Lee, Sun-Youn (Forest Resources Utilization Division, Korea Forest Research Institute)
Doh, Geum-Hyun (Forest Resources Utilization Division, Korea Forest Research Institute)
Chun, Sang-Jin (Forest Resources Utilization Division, Korea Forest Research Institute)
Yoon, Seung-Lak (Forest Products Enginering, Jinju National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.38, no.4, 2010 , pp. 298-305 More about this Journal
Abstract
The effects of wood species, chemical components, filler loading level, filler particle size, and coupling agent on the water absorption property of the wood flour filled polypropylene (PP) composites were investigated in this study. After 500, 1,000, 1,500, 2,000, 2,500 and 3,000 hr water immersion, Quercus (Quercus accutisima Carr.) and Maackia (Maackia amuresis Rupr. et Maxim) showed significantly lower water absorption properties compared to Larix (Larix kaempferi Lamb.). As wood flour loading increases from 10 to 50 wt%, most wood species showed increased water absorption after a given immersion period. Particle size of wood flour proved to have very significant effects on water absorption of the composites. The effect of coupling agent was positive in terms of lowering water absorption of the composites. As the treatment level of coupling agent increases, the water absorption of the composites decreases. The lowest water absorption was obtained at the lower wood flour loading (Maackia), smaller particle size and by the addition of coupling agent. Thickness swelling of the composites shows close dependency on water absorption.
Keywords
biocomposites; wood species; water absorption; particle size; coupling agent; thickness swelling;
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Times Cited By KSCI : 1  (Citation Analysis)
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