Effect of hybridization of organoclay with carbon black on the transport, mechanical, and adhesion properties of nanocomposites based on bromobutyl/epoxidized natural rubber blends

Abstract

The present work provides extensive insight into the effect of hybridization of organoclay with carbon black and their structure–property relationships on nanocomposites based on bromobutyl rubber (BIIR)/epoxidized natural rubber (ENR) blends. Morphology studies reveal well-dispersed nanoclay with the formation of hybrid nanostructures. Synergistic interaction between carbon black and nanoclay increases the tensile modulus and tear strength of the nanocomposites. The effect of layered clay platelets on the transport properties invokes a drastic reduction in the air permeability of up to 25% and in the water vapor transmission rate of up to 35%, and an increment in the electrical and thermal conductivity of the rubber nanocomposites. The peel strength with the rubberized fabric is found to be good for the nanocomposite with a lower elastic modulus. These unique attributes were found to stem from the formation of well dispersed hybrid nanostructures. Rubber formulations with such suitably tailored nanostructures will find applications in next generation rubber-based industrial products.