Influence of ethylene and propylene based elastomer on stucture and mechanical properties of isotactic polypropylene

Blends of isotactic polypropene (i-PP) with metallocene-catalyzed ethylene and propylene elastomers containing 5, 10, 15 and 20 wt % elastomer were prepared and comprised with traditional PP/EPDM blend. metallocene-catalyzed elastomers showed good miscibility with i-PP at low concentration. The mechanicalproperties specially impact strength of the new blends was higher than PP/EPDM while the blending processing was much easier and did not need to any vulcanization

Keywords:

Polypropylene , Blend , Elastomer , Impact strength , Rheology