Abstract
A nanoscale ionic graphene hybrid material with liquid-like behavior was obtained by using tertiary amine as corona and sulfonate anions as canopy. The microstructures and the rheological property of the solvent-free graphene nanofluid (G-PEGs) had been extensively characterized by various analytical techniques. The content of graphene was up to 12.05 wt%. The thickness of G-PEGs ranged from 2 nm to 5 nm. The conductivity of G-PEGs exhibited that the percolation threshold was about 0.99 vol%. In addition, the G-PEGs had relative low viscosity at room temperature (67.6 pa s at 20 °C). Most importantly, the G-PEGs showed excellent dispersion in solvents, such as water and ethanol. Those unique properties of G-PEGs may offer new scientific and technical opportunities for the applications of graphene. At the same time, the facile route to G-PEGs can be used in the fabrication of various GO or graphene based composite materials.
| Original language | English |
|---|---|
| Pages (from-to) | 983-990 |
| Number of pages | 8 |
| Journal | Applied Surface Science |
| Volume | 314 |
| DOIs | |
| State | Published - 30 Sep 2014 |
Keywords
- Amphiphilicity
- Graphene
- Hybrid material
- Liquid-like behaviour
- Solvent-free nanofluid
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