Restricted accessResearch articleFirst published online 2018
Multi-response optimization of the mechanical properties of PP/talc/CaCO 3 ternary nanocomposites by the response surface methodology combined with desirability function approach
This article was focused on the mechanical properties improvement of polypropylene (PP) by optimizing the talc, nanosized calcium carbonate (CaCO3), and maleic anhydride–grafted polypropylene (MAPP) as a compatibilizer. For this purpose, Box–Behnken design of response surface methodology was used to obtain the best combination of additives. Based on the Box–Behnken experimental design, three levels for each factor were used; talc (0, 15, and 30 wt%), MAPP (0, 2, and 4 wt%), and CaCO3 (0, 15, and 30 wt%). The talc was found as the major factor affecting the tensile strength and modulus of PP nanocomposites, while CaCO3 was the major factor affecting the impact strength. The optimal composition of additives for maximum mechanical properties was detected to be 30 wt% talc, 16.6 wt% CaCO3, and 4 wt% MAPP. Finally, surface morphology was analyzed in detail using scanning electron microscopy to confirm the obtained results.
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