Reactive Modification of Polyethylene by Hybrid of Acrylic Acid and Ethyl Acrylate;Effect of Grafting Degree on Mechanical Properties

The functionalization of polyolefins through a grafting reaction is an important industrial process. The monomers grafted onto polyolefins usually are unsaturated functionalmonomers, such as maleic anhydride (MAH), glycidyl methacrylate (GMA), acrylic acid (AA) and its derivatives.The properties and applications of these graftingfunctionalized polyolefins are dependent on the nature and degree of grafting (DG) of the used monomers. Grafting ofpolyethylene (PE) with acrylic monomers is an important method used for the modification of PE. In this work, the in-situ grafting/copolymerization andblending of the hybrid of EA and AA acid on the LLDPE were carried out through a reactive mixing process. The degree ofgrafting is determined by using FTIR and also chemical titration. The mechanical properties of injection molded samples are measures and their correlation with graftingdegree was discussed