Experimental and theoretical study of the influence of the state of dispersion of graphene on the percolation threshold of conductive graphene/polystyrene nanocomposites

Evgeniy Tkalya, Marcos Ghislandi, Ronald Otten, Mustafa Lotya, Alexander Alekseev, Paul Van Der Schoot, Jonathan Coleman, Gijsbertus De With, Cor Koning

Research output: Contribution to journalArticle

28 Citations (Scopus)

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 languageEnglish
Pages (from-to)15113-15121
Number of pages9
JournalACS Applied Materials and Interfaces
Volume6
Issue number17
DOIs
Publication statusPublished - Sep 10 2014
Externally publishedYes

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Graphite
Polystyrenes
Graphene
Nanocomposites
Polydispersity
Platelets
Dispersions
Thermodynamic stability

Keywords

  • graphene
  • percolation threshold
  • polymer nanocomposites

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Experimental and theoretical study of the influence of the state of dispersion of graphene on the percolation threshold of conductive graphene/polystyrene nanocomposites. / Tkalya, Evgeniy; Ghislandi, Marcos; Otten, Ronald; Lotya, Mustafa; Alekseev, Alexander; Van Der Schoot, Paul; Coleman, Jonathan; De With, Gijsbertus; Koning, Cor.

In: ACS Applied Materials and Interfaces, Vol. 6, No. 17, 10.09.2014, p. 15113-15121.

Research output: Contribution to journalArticle

Tkalya, Evgeniy ; Ghislandi, Marcos ; Otten, Ronald ; Lotya, Mustafa ; Alekseev, Alexander ; Van Der Schoot, Paul ; Coleman, Jonathan ; De With, Gijsbertus ; Koning, Cor. / Experimental and theoretical study of the influence of the state of dispersion of graphene on the percolation threshold of conductive graphene/polystyrene nanocomposites. In: ACS Applied Materials and Interfaces. 2014 ; Vol. 6, No. 17. pp. 15113-15121.
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