The interaction between styrene‐butadiene rubber and carbon black on heating

摘要

AbstractThe interaction between a carbon black filler and styrene‐butadiene rubber is increased if the material is heated after milling. This effect has been attributed to the polymeric free radicals which are presented after milling but which require a high temperature to increase their mobility to the point where they can react. The extent of interaction increases with time of heating and with the amount of milling before heating. The postulated mechanism is supported by the experimental activation energies and by the predictable influence of free radical scavengers on the syste