Multifunctional properties of graphene/rubber nanocomposites fabricated by a modified latex compounding method

A modified latex compounding approach was used to prepare graphene/styrene–butadiene rubber (GE/SBR) nanocomposites with multifunctional properties as well as enhanced mechanical property. It is found that the method is efficient in achieving a molecular level dispersion of GE nanosheets in the rubber matrix. Moreover, the well dispersed GE nanosheets have strong interfacial interaction with SBR. As a result, the mechanical property of SBR is greatly improved. Nearly 11 folds of increase in the tensile strength is attained upon addition of 7phr of GE, which is comparable to the reinforcement effect of 30phr of carbon black (N330) or 40phr of fumed nanosilica. More intriguingly, the GE/SBR nanocomposites have low heat buildup and gas permeability, as well as high wear resistance, thermal stability and electrical conductivity. Such versatile functional properties promise GE/SBR nanocomposites for many new applications, for example, green tires and electronic skin.