It is also believed that each compatibilizing block is capable of interacting with the respective blend components. This is the reason explaining why the blend with the compatibilizers exhibited superior mechanical, hardness and set properties. Comparing the three types of blend compatibilizers, TPV with the HDPE-g-MA gave the lowest strength and set properties. This may be attributed to the influence of DCP incorporated during the preparation of HDPE-g-MA. It is well established that DCP initiates a crosslinking reaction of the HDPE molecules during the preparation of compatibilizers and during dynamic curing of the MNR in the molten HDPE.