Journal
MATERIALS & DESIGN
Volume 58, Issue -, Pages 339-345Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2014.02.018
Keywords
Wood plastic composites; Cell wall composition; Mechanical properties; Water resistance; Interfacial adhesion
Categories
Funding
- National Key Technologies R&D Program of China [2012BAD32B04]
- National Natural Science Foundation of China [31010103905, 31070507]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-11-0608]
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Variation in the chemical composition of wood cell walls has a significant influence on the properties of wood plastic composites (WPCs). This study investigated the effect of removal of hemicellulose and/or lignin on the mechanical properties and dimensional stability of WPCs. Four types of wood particles with various compositions including native wood flour (WF), hemicellulose-removed particle (HR), holocellulose (HC), and alpha-cellulose (alpha C) were prepared and compounded with high density polyethylene (HDPE) in an extruder, both with and without maleated polyethylene. Injection molding was used to make test specimens. The HR-based composites exhibited the best water resistance. The HC-based composites obtained a greater tensile modulus but a lower water resistance. The highest values for tensile strength, elongation at brake, toughness, and impact strength were achieved by the composites filled with alpha C. (C) 2014 Elsevier Ltd. All rights reserved.
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