Please use this identifier to cite or link to this item: https://doi.org/10.1002/polb.21847
Title: The effect of length of single-walled carbon nanotubes (SWNTs) on electrical properties of conducting polymer-SWNT composites
Authors: Singh, I.
Verma, A.
Kaur, L.
Bharadwaj, L.M.
Bhatia, V.
Jain, V.K.
Bhatia, C.S. 
Bhatnagar, P.K.
Mathur, P.C.
Keywords: Charge transport
Conducting polymers
Nanocom-posites
Single-walled carbon nanotubes
Thin films
Issue Date: 1-Jan-2010
Source: Singh, I.,Verma, A.,Kaur, L.,Bharadwaj, L.M.,Bhatia, V.,Jain, V.K.,Bhatia, C.S.,Bhatnagar, P.K.,Mathur, P.C. (2010-01-01). The effect of length of single-walled carbon nanotubes (SWNTs) on electrical properties of conducting polymer-SWNT composites. Journal of Polymer Science, Part B: Polymer Physics 48 (1) : 89-95. ScholarBank@NUS Repository. https://doi.org/10.1002/polb.21847
Abstract: DC conductivity of conjugated polymer-single-walled carbon nanotube (SWNT) composite films has been measured for different SWNT concentrations. The composite was prepared by dispersing SWNTs in the poly (3-octylthio-phene), P3OT matrix already dissolved in xylene. The conductivity of the composite films showed a rapid increase as the SWNT concentration increases beyond a certain value. This behavior is explained in terms of percolating paths provided by the SWNTs in the volume of polymer matrix. To investigate the effect of length of nanotubes on the percolation conductivity, different SWNT samples were employed with similar diameter but varying tube lengths. It was found that the conductivity of the composite films is strongly dominated by the length of the nanotubes. Lower percolation limit and high conductivity value of composite films is observed for longer nanotubes. Furthermore, the conductivity is observed to be dependent on the size of the host polymer molecule also. © 2009 Wiley Periodicals, Inc.
Source Title: Journal of Polymer Science, Part B: Polymer Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/57614
ISSN: 08876266
DOI: 10.1002/polb.21847
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