n (Polym

dulus, hardness and cross-link density for increasing weight ratio of abrasion loss of blends decreased with increasing weight ratio of HDPE. The blends also showed a continuous reduction in elongation at break as well as swelling coefficient with ª 2014 Production and hosting by Elsevier B.V. on behalf of Cairo University. rated copolymers for about five decays [1,2]. It has been used [3]. ated NBR com-de some b s, such as rocarbon cially resistance to hydrocarbons and oils, and NBR has wide High density polyethylene (HDPE) is a semi-crystalline with outstanding chemical resistance as well as simple processabil-ity. Acrylonitrile butadiene rubber (NBR) is a simply process-able, tough, and flexible rubber. The knowledge of thermoplastic elastomers (TPEs) from blends of NBR and HDPE has occurred as a valuable imple-ment in tailoring polymers to require of end users. A various articles as well as books were published on this issue [6–10], and the theoretical studies performed generally on engineerin