Study on the Impact Strength, Tensile and Hardness of Polypropylene/Polyethylene Binary Alloys

Binary polymer alloys of polypropylene (PP) and polyethylene (PE) were prepared in different percent compositions. Polypropylene was used with three types of polyethylene including LLDPE, HDPE and LDPE. The samples were fabricated using injection molding in semi industry scale. Charpy impact, tensile and shore (D) hardness tests were employed to study on the mechanical properties of the samples. In general, addition the optimal amounts of PE to PP increased its toughness to more than 100% as well as increased its elongation percent to almost 100%. while that have a little negative effect on its hardness and it is almost constant.