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The present paper discusses about a glossy polypropylene composition which can replace ABS and PC-ABS in the aesthetic interior and exterior bezels of a car with good stiffness and high flow. High Melt flow index of this composition minimizes the number of gate locations thereby drastically improving the aesthetics. Usage of Special Additives, and High Aspect ratio talc reduced the density of this composition as compared to a conventional PP compound. The combined benefits of lower weight, adequate stiffness, good gloss, scratch resistance and weathering resistance in the unpainted form makes this composition attractive for Interior and exterior aesthetic bezels. Again, this composition is cost-effective thereby reducing the part costs of interior and exterior bezels significantly.

This paper discusses about the feasibility of polypropylene-Starch blend in automotive application. Melt blending of polypropylene -starch Hybrid, polypropylene and talc are done using a co-rotating twin screw extruder. By optimizing the percentage of Polypropylene -starch hybrid, Polypropylene and talc, a formulation has been developed which is comparable with the commercial talc based polypropylene grade. Formulations based on regular talc and high aspect ratio talc are tried out and the composition based on high aspect ratio talc is found to have improved performance. Based on the Bio-PP formulation, a pillar trim auto component is molded. This pillar trim met the functional, aesthetic requirements but with higher weight. The developed composition contains about 18% starch and is a small step towards using greener materials with a sustainable raw material base in Automobiles.