Abstract
Unsaturated polyester resin material containing epoxidised palm oil is a new alternative for bio-based thermoset material. Unsaturated polyester resin blends with epoxidised palm oil were synthesised using benzoyl peroxide as an initiator. Unsaturated polyester resin blends with various content of epoxidised palm oil (10, 20 and 30 wt-%) were studied. The samples were cured in an oven at 100°C for 2 hours followed by post-curing at 160°C for another 2 hours. The effects of epoxidised palm oil loadings in unsaturated polyester resin on the thermo-physical properties and izod impact strength were studied. The findings reveal that the storage modulus of unsaturated polyester resin/epoxidised palm oil bioresin decreased slightly by the addition of epoxidised palm oil. At 20 wt-% of epoxidised palm oil loadings, the glass transition temperature (Tg) decreased by ±5°C and the storage modulus decreased by about 20% from the original unsaturated polyester resin.
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