| Autor: |
Hobbie, E. K., Obrzut, J., Kharchenko, S. B., Grulke, E. A. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 7/28/2006, Vol. 125 Issue 4, p044712, 3p, 4 Graphs |
| Abstrakt: |
We investigate the effect of interfacial stabilizer on charge transport in polymer-dispersed carbon nanotubes. Despite mechanical contact, samples with dispersant show poor conductivity, which we attribute to a robust interfacial layer between contacted nanotubes. In comparison, results obtained when nanotubes are mechanically mixed into polymer melts without dispersant show much better conductivity. The difference is striking; at comparable loading, neat melt composites have resistivities five orders of magnitude smaller than those containing interfacial stabilizer. Our results highlight a fundamental issue for the engineering of conducting carbon nanotube composites; dispersion stability will typically be achieved at the expense of conductivity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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