Charge transport properties of water dispersible multiwall carbon nanotube-polyaniline composites

Sangeeth, Suchand CS and Jimenez, Pablo and Benito, Ana M and Maser, Wolfgang K and Menon, Reghu (2010) Charge transport properties of water dispersible multiwall carbon nanotube-polyaniline composites. In: Journal of Applied Physics, 107 (10).

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Abstract

The transmission electron microscopy images of in situ prepared multiwall carbon nanotubes (MWNTs)and polyaniline (PANI) composites show that nanotubes are well dispersed in aqueous medium, and the nanofibers of PANI facilitate intertube transport. Although low temperature transport indicates variable range hopping (VRH) mechanism, the dc and ac conductivity become temperature independent as the MWNT content increases. The onset frequency for the increase in conductivity is observed to be strongly dependent on the MWNT weight percent, and the ac conductivity can be scaled onto a master curve. The negative magnetoresistance is attributed to the forward interference scattering mechanism in VRH transport. (C) 2010 American.

Item Type:	Journal Article
Publication:	Journal of Applied Physics
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	23 Jun 2010 04:59
Last Modified:	11 Apr 2013 05:46
URI:	http://eprints.iisc.ac.in/id/eprint/28558

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