Abstract
ABSTRACTIn this study, the effects of nano Fe2O3 content and foaming temperature and time are investigated on the various structural and mechanical properties of polypropylene in a batch foaming process with CO2 using Taguchi approach. Cell size, relative density, and specific impact strength and hardness are considered as different criteria. The results indicated that the cell sizes are below 10 μm and a 20% improvement is observed in the microcellular nanocomposite samples containing 4 wt % nano Fe2O3. A 20% improvement is observed in specific impact strength by increasing 4 wt % of nano Fe2O3. Also, a simultaneous decision analysis is performed and the best sample with respect to considered structural and mechanical properties is selected using multi‐criteria decision making methods. The results demonstrated that the microcellular nanocomposite foams containing 4 wt % of nano Fe2O3 are the best samples. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46098.
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