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Journal of Thermoplastic Composite Materials, Vol. 19, No. 6, 659-669 (2006)
DOI: 10.1177/0892705706067486

Injection Molding of Postconsumer Wood–Plastic Composites II: Mechanical Properties

R. Gosselin

Department of Chemical Engineering, CERSIM Université Laval, Quebec City, Canada, G1K 7P4

D. Rodrigue

Department of Chemical Engineering, CERSIM Université Laval, Quebec City, Canada, G1K 7P4Denis.Rodrigue{at}gch.ulaval.ca

B. Riedl

Department of Wood Sciences, CERSIM, Université Laval Quebec City, Canada, G1K 7P4

ABSTRACT: In the first part of this study, fiber-reinforced microcellular foams were produced via injection molding to study their morphological properties as a function of mold temperature as well as wood, blowing agent, and coupling agent concentrations. Yellow birch wood fibers are added to a recycled postconsumer HDPE/PP matrix (85: 15 ratio) in proportions ranging from 0 to 40 wt% and then foamed with a chemical blowing agent. Maleic-anhydride-polypropylene copolymer (MAPP) is also used as a coupling agent in proportions ranging from 0 to 10 wt% of wood content. In this second part, the mechanical properties in flexion, torsion, and traction are presented.

Key Words: injection molding • composite, foam • mechanical properties • MAPP


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