FORMULATION AND PROCESSING OF NATURAL FIBRE-REINFORCED POLYMER COMPOSITES

摘要

The microstructure, thermal and mechanical properties of a range of natural fibres, derived from arable crops, are examined with a view to using these as reinforcing additives for thermoplastics. The fibres were characterized prior to incorporation into the polymer using a range of techniques, including SEM, image analysis and thermogravimetric analysis, at room and elevated temperatures. The thermal and mechanical properties obtained are discussed in relation to the measured composition and structural form of the fibres. Particular emphasis is given to determining the nature and consequences of fibre damage induced during melt-processing operations, fibre orientation occurring in mouldings, and possible interfacial adhesion between the matrix and fibres, with and without the use of bonding agents. Novel processing techniques, including integrated compounding/extrusion and direct compounding injection moulding processing technologies, are considered as means for improving the quality of processed parts and the economics of manufacture.