Properties of Blend Polymer Comprising Inorganic Compound and Polypropylene Modified with Unsaturated Carboxylic Acid

Abstract

Effects of grafting of polypropylene on the properties of blend polymer comprising polypropylene and an inorganic compound were investigated. The mechanical properties of the blend polymer are improved by the grafting with a small amount of an unsaturated carboxylic acid or a carboxylic anhydride such as acrylic acid or maleic anhydride in an extruder. Water retards the grafting reaction and molecular-chain scission of polypropylene to decrease the fluidity, the tensile and flexural strength of the blend polymer. Combustion calory and melt dripping during the combustion of the blend polymer decrease with increasing concentration of the inorganic compound.