Studing The Mechanical Properties And Morphology of Ternary Blends Of Polyethylene

Abstract

The mechanical properties and the morphology of the ternary blend ofLDPE/LLDPE/HDPE were studied.In the present work LDPE was mixed with equal amount of LLDPE and differentwt% of HDPE (0, 10, 20 and 30 %) using the two roll mills. The mechanical propertiesand the morphology were specified by measuring the (tensile, hardness, impactproperties) for the former, and photomicrograph for the later. From the tensile testresults it was found that the tensile strength at break of the ternary blend increased withincreasing the HDPE contain also the increases of wt% HDPE leads to decrease theelongation at break. For the hardness test it was found that the shore hardness of theternary blends increased with the increasing the HDPE contain .On the other hand theimpact test carried out also and it was found that the addition of HDPE leads todecrease the impact strength . Nevertheless, optical micrograph results that the HDPEserves as a compatabilizing agent for immiscible LDPE/LLDPE