Improvement of impact property for Polypropylene by mixing with linear low density poly ethylene

Abstract

The research focused on how to improve one of the five large-volume polymeric families that belong to the commodity resins are: polyethylene (PE), polypropylenes (PP), styrene’s (PS), acrylics (PMMA), and vinyl’s (PVC) they represent 79% of all plastics. For many years, polypropylene (PP) has been very successfully used for blown film, injection molded, and extrusion applications. Although PP has a most remarkable combination of physical properties, it has poor impact strength especially at low temperature due to the inherently high glass transition temperature (Tg) and high crystalline.

Recently, the blending of PP with PE to provide improvements in its properties, especially in impact resistance at low temperatures and at any given stiffness, has been widely studied.

The effect of LLDPE on the mechanical properties of PP was investigated. The research have been made on the mechanical properties of linear low density polyethylene/polypropylene (LLDPE: PP) blend. Analysis has been also performed using Microsoft Word. Blend has been prepared by injection molding machine. The blend of ratio 30%LLDPE 70%PP shows superior impact strengths and increased mechanical properties.