Abstract
The polymer modification by the reactive mixing using Banbury mixer was examined under various conditions. It became clear that it was necessary to add ZnO and sulfur for the reaction of Si75: [bis(3-triethoxysilylpropyl) disulfide; TESPD] with the polymer without affecting the processability. The modified polymer thus obtained showed small signal at 3.8 ppm which is attributable to TESPD moiety in 1H-NMR analysis. The improvement of Payne effect and decrease of tanδ were observed by using the modified polymer. This technology is expected to be effective to reduce the rolling resistance of tire.
