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Mechanical Property
Microstructures
Moisture Content
Polymer Matrix Composite
Raw Materials
Aspect Ratio
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The effect of pre-softened wood chips on wood fibre aspect ratio and mechanical properties of wood–polymer composites
The effect of pre-softened wood chips on wood fibre aspect ratio and mechanical properties of wood–polymer composites,10.1016/j.compositesa.2011.09.02
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The effect of pre-softened wood chips on wood fibre aspect ratio and mechanical properties of wood–polymer composites
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Maiju Hietala
,
Erik Samuelsson
,
Jouko Niinimäki
,
Kristiina Oksman
The objective of this work was to study the effect of chemical pre-treatment and
moisture content
of wood chips on the wood particle
aspect ratio
after compounding in a twin-screw extruder and on the mechanical properties of wood–polymer composites (WPCs). Composites with 50wt.% wood content were manufactured using pre-treated and untreated wood chips. The effect of wood
moisture content
on composite properties was studied by using dried and undried wood chips. The mechanical properties and fracture surfaces of the composites as well as the microstructure and
aspect ratio
of wood particles after compounding were studied. The highest wood particle
aspect ratio
after extrusion was achieved by using pre-treated, undried wood chips as raw material. The chemical pre-treatment was found to enhance the defibration of wood chips as well as the mechanical properties of the composites.
Journal:
Composites Part A-applied Science and Manufacturing - COMPOS PART A-APPL SCI MANUF
, vol. 42, no. 12, pp. 2110-2116, 2011
DOI:
10.1016/j.compositesa.2011.09.021
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