Polypropylene Alloys and Composites—A Review

Abstract

In the twenty-first century, composites of domestic polymer material with natural fibers are gaining considerable importance due to numerous valid reasons such as environmental protection, balancing ecosystem besides consumer demands, and allied legislation issues. Thus, the quest of manufacturing industries for generating new material is boosted tremendously. Blends and composites of polypropylene have been popularly used since about last thirty to forty years to manufacture completely innovative novel materials. These materials have combined entity characteristics of the basic module polymers. The success of these synthesized blends and composites is entirely dependent on compatibilization of the parent polymers with the additives. Improvisation in the blend morphology, enhancement in contact area adhesion, and furthermore consequently improvement in the concert service of blend are the basic outcomes of the compatibilization. Blends of polypropylene (PP) with synthetic and natural fibers are gaining special importance because they allow increment in the thermal and mechanical properties of the new material that combined with the process ability of the PP. The new material developed is definitely a cost-effective and largely being used in automotive sector besides its uses in various other industrial sectors. The mechanical properties (flexural strength, impact strength, stiffness, higher strength-to-weight ratio, and modulus) and thermal properties like heat deflection temperature are having great importance in case of polypropylene.