INCREASING FLEXIBILITY USING MAPP IN TWO-PHASE PE/PP POLYMER SYSTEMS

Abstract

The immiscibility of polyethylene (PE) and polypropylene (PP) in polymer blends often limits their mechanical performance, particularly flexibility and impact resistance. This article explores the role of maleic anhydride-grafted polypropylene (MAPP) as a compatibilizer in two-phase PE/PP systems. By enhancing interfacial adhesion, reducing dispersed phase domain size, and promoting efficient stress transfer, MAPP significantly improves the flexibility and toughness of the blend. Optimal MAPP concentrations and proper processing conditions are critical to achieving the desired balance between flexibility and strength. Applications of MAPP-compatibilized PE/PP blends include automotive parts, packaging materials, and consumer goods, demonstrating their practical importance in engineering and materials science.