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http://dx.doi.org/10.7473/EC.2011.46.3.211

Preparation and Characterization of Wood Polymer Composite by a Twin Screw Extrusion  

Lee, Jong-Hyeok (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
Lee, Byung-Gab (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
Park, Ki-Hun (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
Bang, Dae-Suk (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
Jhee, Kwang-Hwan (Department of Applied Chemistry, Kumoh National Institute of Technology)
Sin, Min-Cheol (Korea TR Co. Ltd.)
Publication Information
Elastomers and Composites / v.46, no.3, 2011 , pp. 211-217 More about this Journal
Abstract
Wood Polymer Composite (WPC) has attracted a great deal of attention in environmental industries due to renewable resources, processability, excellent physical properties and logging regulations for application to housing units and engineering construction materials. In this study, commercial WPCs were prepared by using a modular intermeshing co-rotating twin screw extruder. The effect of three main factors such as wood flour contents, coupling agent concentrations and pre-treatment of wood flour on the properties of WPCs was extensively investigated. It was found that tensile strength and thermal stability were decreased with increasing wood flour contents whereas the water absorption was increased. Addition of maleic anhydride grafted polypropylene (PP-g-MA) into WPC exhibited better physical properties. On the contrary, the water absorption was slightly decreased with PP-g-MA. Finally the sample, which was prepared with pre-treated wood flour, represented the highest tensile strength. However, the water absorption of the sample was increased due to the transition of crystalline structure of cellulose.
Keywords
wood polymer composite; twin screw extrusion; natural fiber reinforced composite; coupling agent; surface treatment; water absorption;
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