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Effect of Nanosilica Fillers on the Cure Characteristics and Mechanical Properties of Natural Rubber Composites

In recent years, polymer/nanofiller composites have received intense attention and become a core focus of nanoscience and nanotechnology. In polymer-nanoscale filler composites research, the primary goal is to enhance the strength and toughness of polymeric components using molecular or nanoscale reinforcement. In this study, nanosilica was used as filler with various loading from 1-5 phr to enhance mechanical properties and cure characteristics of natural rubber composites. 3 phr of nanosilica filler loadings showed highest tensile strength and shortest cure time compared to the other filler loadings. Tear strength was improved with increasing filler loadings. The effect of nanosilica loading has been analyzed using FTIR characterization and the tensile fracture was investigated by SEM analysis.