The rheometric, mechanical and morphological properties of carbon black filled styrene butadiene rubber vulcanizates in presence of alkanolamide

Abstract

Properties of carbon black (CB)-filled styrene-butadiene rubber (SBR) vulcanizates include rheometric, mechanical and morphological in presence of alkanolamide were studied. The synthetic rubber was filled by CB at a settled loading at thirty parts per hundred rubber (phr). The alkanolamide was derived from ethanolamine and refined bleached deodorized palm stearin and it was incorporated into CB-filled SBR at one, three, five and seven phr. From the results, it was found that alkanolamide was a rubber chemical as a co-curing and plasticizing material. As a co-curing material, it reduced the times to cure and scorch of filled SBR vulcanizates. As a plasticizing material, it reduced minimum torque or viscosity but raised the elongation at break. The properties of torque difference, tensile moduli, hardness, tensile strength and resilience of CB-filled SBR vulcanizates were also raised due to the presence of alkanolamide. The presence of a five phr of alkanolamide was the optimum concentration for CB-filled SBR whatever was tested by morphological study. The fractured vulcanizate of CB-filled SBR with the five phr of alkanolamide demonstrated greatest surface roughness and matrix tearing.