On the Application of Modified Low Molecular Weight Polyethylene in Compositions with Starch

The compositions of graft low molecular weight polyethylene and acrylic acid copolymer with starch were synthesized. The carboxyl groups of the copolymer and the hydroxyl groups of starch enter into chemical reaction with the formation of an ester bond, as was proved by the FTIR spectroscopy. The X-ray diffraction analysis of the graft copolymer mixture with starch revealed a decrease in the degree of crystallinity. Graft copolymers were used as compatibilizers in polymeric compositions of low-density polyethylene with starch. The presence of a graft copolymer in the composition is favorable to obtain smaller starch particles in the polyethylene matrix and improve the physical and mechanical properties of the composition.