Normally, direct introduction of recycled materials into polymer matrix could cause unwanted aggregations, which could effect on the properties of the final product. However, adding third material as a compatibilizer could enhance the properties of the product. This work studied the effects of different SMR L content (2,4,6,8 and 10 Phr) as a compatibilizer on the physical, tensile properties, and cure characteristics of ENR-25/rSC compounds. The results of cure characteristics showed decreasing on scorch time (t2) and cure time (t90) while increasing on minimum torque (ML) and maximum torque (MH) as SMR L increased in ENR-25/rSC/SMR L compounds. The values of modulus (M100), tensile strength (Ts), hardness and crosslinking density increased gradually with increasing SMR L while elongation at break (Eb) decreased.
