Corn oil is readily available and inexpensive can be used to fabricate different types of polymers. In the present study, epoxidised corn oil has been prepared by corn oil is treated with acetic acid and hydrogen peroxide. The epoxidation is confirmed by FT-IR, iodine value and oxirane oxygen analysis. Natural fibres such as coir, banana, jute, sisal etc are locally available in abundance and can be used to fabricate the composite materials for different applications. Epoxy composites are prepared from natural fibres with different weight ratios using tryethylamine as hardner and phthalic anhydride as curing agent. The soil burial degradation and solvent absorptivity percentage are observed. Soil burial degradation study of polyesters and their composites are confirmed by SEM analysis.