Effects of Defibration Conditions on Mechanical and Physical Properties of Wood Fiber/High-Density Polyethylene Composites

Autor:	Jan T. Benthien, Henrik Lerche, Katrin U. Schwarz, Martin Ohlmeyer
Rok vydání:	2013
Předmět:	chemistry.chemical_classification Absorption of water General Chemical Engineering Pulp (paper) General Chemistry Polymer engineering.material Flexural strength chemistry Ultimate tensile strength engineering General Materials Science High-density polyethylene Composite material
Zdroj:	Journal of Wood Chemistry and Technology. 34:98-110
ISSN:	1532-2319 0277-3813
DOI:	10.1080/02773813.2013.838269
Popis:	Defibration conditions influence wood fiber characteristics and thereby properties of fiber-based materials. In this study, the effects of several defibration conditions on mechanical and physical properties of fiber-based wood-plastic composites (WPCs) are illustrated. Various WPCs were tested containing different thermo-mechanical pulps (TMPs) or groundwood pulp (GWP), whereby material composition (50 wt% wood fibers, 47 wt% polymer, 3 wt% coupling agent) and the production process (internal mixer, injection molder) were kept consistent. The data from the experiment revealed that differing defibration conditions led to statistically significant differences in the tested flexural, tensile, and impact properties as well as in the water absorption of WPC. Overall, the GWP and the TMP which was produced under the mildest defibration conditions performed best in fiber-based WPCs. Therefore, grinders and refiners may be equally suitable to produce pulp for WPC usage. As a side-effect within this stud...
Databáze:	OpenAIRE
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