Experimental and Theoretical Study of the Influence of the State of Dispersion of Graphene on the Percolation Threshold of Conductive Graphene/Polystyrene Nanocomposites
ACS Applied Materials & Interfaces2014Vol. 6(17), pp. 15113–15121
Citations Over TimeTop 13% of 2014 papers
Evgeniy Tkalya, Marcos Gomes Ghislandi, Ronald H. J. Otten, Mustafa Lotya, Alexander Alekseev, Paul van der Schoot, Jonathan N. Coleman, Gijsbertus de With, Cor E. Koning
Abstract
The effect of the dispersed state of graphene is studied as a factor influencing the electrical percolation threshold of graphene/polystyrene nanocomposites. We find the percolation threshold of our nanocomposites, prepared with graphene dispersions with different thermodynamic stabilities, degrees of exfoliation, and size polydispersities, to range from 2 to 4.5 wt %. Connectedness percolation theory is applied to calculate percolation thresholds of the corresponding nanocomposites, based on the premise that size polydispersity of graphene platelets in the corresponding solutions must have a strong influence on it. Theory and experimental results agree qualitatively.
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