Effect of nanosize CaSO₄ and Ca₃(PO₄)₂ particles on the rheological behavior of polypropylene and its simulation with a mathematical model

Abstract

Nanosize CaSO 4 and Ca 3 (PO 4 ) 2 fillers were synthesized with an in situ deposition technique, and their sizes were confirmed by X-ray diffraction. CaSO 4 was prepared in 12-and 22-nm sizes, and Ca 3 (PO 4 ) 2 was prepared in 13-and 24-nm sizes. Experimental variables, such as torque, shear viscosity, shear stress, and shear rate, of the nanofilled polypropylene (

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