Journal of Thermoplastic Composite Materials

 

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Journal of Thermoplastic Composite Materials, Vol. 19, No. 6, 639-657 (2006)
DOI: 10.1177/0892705706067484

Injection Molding of Postconsumer Wood–Plastic Composites I: Morphology

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 7P4; Denis.Rodrigue{at}gch.ulaval.ca

B. Riedl

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

In this study, fiber-reinforced microcellular foams are produced via injection molding and studied as a function of mold temperature as well as wood, blowing agent, and coupling agent concentrations. Birch wood fibers are added to a post-consumer recycled HDPE/PP matrix (85: 15 ratio) in proportions ranging from 0 to 40 wt% and then foamed. 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 first part, the morphological analysis of composite foams is presented including cell roundness, cell size, skin thickness, void fraction, and fiber aspect ratio.

Key Words: injection molding • composite • foam • morphology • MAP


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