Moreover, the lowest tension set properties were also observed at a loading of the compatibilizer of 5 wt% of HDPE. The blend compatibilizer was incorporated into the mixing chamber after the rubber compound was added. During the dynamic vulcanization process, the compatibilizer molecules possibly cover the rubber particles, which are located at the blend interface. After the dynamic vulcanization for the given processing condition, compound formulation and blend proportion, a two-phase system occurred with a constant amount of surface area.