Improvement of Impact Strength of Elastomer-blended Polypropylene by Filling with Fine Filler Particles

Abstract

Many researchers reported that the impact strength and modulus of composites were depended markedly on the dispersion states of elastomer and filler particles in polypropylene (PP). The effects of dispersion states of blended elastomer (SEBS) particles and fine CaCO3 particles on the impact strength of the composites are systematically reviewed in this paper. Furthermore, the mechanism of impact strength improvement of the composites is discussed based on the results of optical microscope observation of fractured specimens.