Characterization of interfacial strength in natural fibre - polyolefin composites at different temperatures

Thomason, James L. and Rudeiros-Fernández, Jose L. (2021) Characterization of interfacial strength in natural fibre - polyolefin composites at different temperatures. Composite Interfaces. ISSN 0927-6440 (https://doi.org/10.1080/09276440.2021.1913901)

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Abstract

It is often suggested that optimization of the fibre-matrix interfacial adhesion is essential to improve the mechanical performance of natural fibre reinforced thermoplastic compounds. The use of such composites in many applications often requires characterisation of performance over a range of temperatures. This paper presents a study on the measurements of the interfacial adhesion of coir fibre with various polyolefin matrices at room temperature. We then present a novel adaptation of a dynamical mechanical analyser to enable the measurement of interfacial shear strength over the temperature range of −40°C to 120°C. Results from these measurements are presented and discussed in terms of the relationship of apparent IFSS to residual thermal stresses in such thermoplastic composites.