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.
Original language | English |
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Pages (from-to) | 15113-15121 |
Number of pages | 9 |
Journal | ACS Applied Materials & Interfaces |
Volume | 6 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2014 |