Abstract
Plasticizer that is derived from petroleum oil has been used commercially in rubber compounding especially in tyre industries. Despite its harmful effect to the environment, the urge to replace this nonrenewable source is needed. Coconut oil has a great potential as a natural plasticizer source. The aim of this study was to investigate the effectiveness on the physical and mechanical properties of natural rubber with different amounts of coconut oil (2, 4 and 6 phr). The rubber compounding was performed on a two-roll mill machine. The composition of fatty acid in the oil was examined by using gas chromatography flame ionization detector (GC-FID). The predominant saturated fatty acid was found to be lauric acid. Meanwhile, the natural rubber compound showed a significant reduction in cure time to 4.15 min and highest torque development at 8.67 dN m. In addition, the mechanical properties were significantly improved at 4 phr of coconut oil loading, which gave good tensile strength at 18.26 MPa and elongation at break for 1859.05%. The crosslink density was at 3.15 × 10−4 gm/mol/cm3. Therefore, coconut oil exhibits as one of the sustainable source for plasticizing oil and it is known to be environmentally friendly.
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Othman, F., Ismail, N.A. (2020). Coconut Oil Plasticizer as a Replacement of Petroleum Oil in Natural Rubber Compound: Physical and Mechanical Properties. In: Alias, N., Yusof, R. (eds) Charting the Sustainable Future of ASEAN in Science and Technology . Springer, Singapore. https://doi.org/10.1007/978-981-15-3434-8_18
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DOI: https://doi.org/10.1007/978-981-15-3434-8_18
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