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{ Natural fibre-reinforced composite has the potential to replace current materials used for automotive industrial applications. Oilseed flax fibre could be used as reinforcement for composites because it is readily available, environmentally friendly and possesses good mechanical properties. In this research, oilseed flax fibre reinforced-LLDPE and -HDPE biocomposites were developed through extrusion and injection molding. The flax fibre was chemically treated to improve the bond between the fibre and polymer. Flax fibre was mixed with low linear density polyethylene (LLDPE) and high density polyethylene (HDPE) with fibre content varying from 10 to 30% by mass and processed by extrusion and injection molding to biocomposites. The mechanical properties, surface properties, and thermal properties of biocomposites were measured to analyze the treatment and processing effect and to compare the effect of different flax fibre concentrations on the biocomposites.

A new direction in biocomposite manufacturing is to integrate natural fibers and recycled polymers for manufacturing of some innovative products for various industrial uses including automotive under hood parts. The performance of these new materials are comparable to existing ones even with the replacement of synthetic fiber with biodegradable natural fiber from agricultural residue and with the shift from pure polymer to recycled polymer. Thermoplastic are reinforced with flax fiber mostly used to develop biocomppsite. Most of the research reviewed indicated that very limited work had been done on using flax fiber with recycled post consumer thermoplastic to make biocomposite. The goal of this research is to develop recycled biocomposite material by using flax fiber as a reinforcement and recycled post consumer thermoplastic as matrix and streamline the manufacturing process with optimal processing condition and fiber percentage.

Flax, which is known for its linens and oils that are used for industrial products, can also be utilized as a cost effective and environmentally acceptable approach to the creation of a partially biodegradable biocomposite. Biocomposite material is investigated by combining recycled tire rubber, flax and linear low density polyethylene (LLDPE). The manufacturing process which be used to fabricate the biocomposite product included Extrusion and Compression Molding. Optimizing and studying the composition percentages of the compounds were studied in this paper. Moreover, the properties of the product were observed by using tensile test, tearing test, water absorption test, hardness test and Differential Scanning Calorimetry.