Biocomposite

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This article may require cleanup to meet Wikipedia's quality standards. Please improve this article if you can. (May 2007)

Interior carpeting of a cars door made by a biocomposite of hemp fibres and polyethylen

A biocomposite is a material formed by a matrix (resin) and a reinforcement of natural fibers (usually derived from plants or cellulose). With wide-ranging uses from environment-friendly biodegradable composites to biomedical composites for drug/gene delivery, tissue engineering applications and cosmetic orthodontics. They often mimic the structures of the living materials involved in the process in addition to the strengthening properties of the matrix that was used but still providing biocompatibility, e.g. in creating scaffolds in bone tissue engineering.

Biocomposites are characterised by the fact that:

• the petrochemical resin is replaced by a vegetable or animal resin, and/or
• the bolsters (fiberglass, carbon fibre or talc) are replaced by natural fibre (wood fibres, hemp, flax, sisal, jute...)

Those markets are significantly rising, mainly because of the increase in oil price, and recycling and environment necessities.

Example and photo of a sandwich biocomposite manufactured with a wood/fabric hemp matrix and 20% PU resin at the §4. The resulting material combines high resistance and low weight, with bending module 9000MPa and a density 0,5 T/m3.

Some product examples of thermoplastic injection moulded biocomposites can be seen from www.kareline.com.

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