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Abstract

Graft polymerization of isoprene onto styrene–butadiene rubber (SBR) was carried out in latex using p-menthane hydroperoxide and ferrous sulfate as an initiator. The effect of isoprene on vulcanization characteristics, mechanical, and thermal properties of isoprene-grafted SBR were investigated. The grafting of isoprene onto SBR was confirmed by attenuated total teflectance–Fourier transform infrared spectroscopy. The fatigue heat of the isoprene-grafted SBR mainly come from deformation and restructuring, while the smaller deformation of isoprene-grafted SBR will cause the heat lower. The results revealed that the glass transition temperature decreases with the grafting of isoprene and strengthen the Payne effect in grafted SBR.

Keywords

Styrene–butadiene rubber isoprene grafted mechanical properties Payne effect

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Preparation and properties of isoprene-grafted styrene–butadiene rubber in latex

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