Rheological Characterization of the Dispersibility of Graphene Nanoparticles in Polymer Nanocomposites

The dispersibility of nanoparticles in polymer nanocomposites significantly affects the mechanical, thermal, and electrical properties of the final products. The objective of this study is to quantify the dispersibility of nanoparticles in polymer nanocomposites. Various amounts of graphene nanoparticles were introduced in polypropylene-based and polylactic acid-based resins through melt compounding. They were then injectionmolded to fabricate disc-type specimens for characterizing the rheological properties of the nanocomposites. To evaluate the dispersibility of the nanoparticles in the composites, the associated storage (G’) and loss (G’‘) moduli were analyzed for plotting the G’-G’‘ slopes. Furthermore, the Van Gurp-Palmen plot was employed for analyzing the increase in material elasticity with respect to the base resins and nanoparticle compositions.

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Rheological Characterization of the Dispersibility of Graphene Nanoparticles in Polymer Nanocomposites

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