w HEN there is a need for enhancing the adhesion between a polymeric material and the filler, silane coupling agents are the best choice.in order to enhance the adhesion between acrylic rubber (acm) and silica, vinyl trimethoxysilane (vtms) can be used for this purpose.acrylic rubber was prepared by emulsion polymerization.vtms was added during the polymerization process to copolymerize with acm.v...