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  1. Properties of wood-plastic composites (WPCs) reinforced with extracted and delignified wood flour

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    Author(s): Yao Chen; Nicole M. Stark; Mandla A. Tshabalala; Jianmin Gao; Yongming Fan
    Date: 2014
    Source: Holzforschung 2014; 8 p.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    DOI: https://doi.org/10.1515/hf-2013-0175
    PDF: Download Publication  (1.17 MB)
    Related Research Highlights

    FPL-2014-183    		Wood Flour Extraction Improves Moisture Performance of Wood-Plastic Composites

    Description

    The water sorption and mechanical properties of wood-plastic composites (WPCs) made of extracted and delignified wood flour (WF) has been investigated. WF was prepared by extraction with the solvent systems toluene/ethanol (TE), acetone/water (AW), and hot water (HW), and its delignification was conducted by means of sodium chlorite/acetic acid (AA) solution. A 2 4 full-factorial experimental design was employed to determine the effects of treatments and treatment combinations. WPCs were prepared with high-density polyethylene (HDPE) and treated WF was prepared by means of extrusion followed by injection molding, and the water absorption characteristics and mechanical properties of the products were evaluated. WPCs produced with extracted WF had lower water absorption rates and better mechanical properties than those made of untreated WF. WPCs containing delignified WF had higher water absorption rates and improved mechanical performance compared with those made of untreated WF.

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    Citation

    Chen, Yao; Stark, Nicole M.; Tshabalala, Mandla A.; Gao, Jianmin; Fan, Yongming. 2014. Properties of wood-plastic composites (WPCs) reinforced with extracted and delignified wood flour. Holzforschung 2014; 8 p.

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    Keywords

    delignification, diffusion, extractives, MOE, moisture performance, MOR, wood flour, wood-plastic composites (WPCs)

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