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http://dx.doi.org/10.7234/kscm.2011.24.6.001

Preparation and characterization of water-soluble polyaniline/carbon nanotube composites  

Lee, Jea-Uk (한국기계연구원부설재료연구소 복합재료연구그룹)
Jo, Won-Ho (서울대학교 재료공학부)
Lee, Won-Oh (한국기계연구원부설재료연구소 복합재료연구그룹)
Byun, Joon-Hyung (한국기계연구원부설재료연구소 복합재료연구그룹)
Publication Information
Composites Research / v.24, no.6, 2011 , pp. 1-6 More about this Journal
Abstract
A new water-soluble and self-doped poly(styrenesulfonic acid-graft-aniline), PSSA-g-PANI, for dispersing carbon nanotubes (CNTs) in water was synthesized and its ability to stabilize aqueous CNT dispersions was examined. It was observed that the PANI in PSSA-g-PANI, which has benzoid and quinoid structure, was strongly adsorbed onto the nanotube surface via a strong ${\pi}-{\pi}$ interaction, and thus only gentle sonication causes exfoliation of CNT ropes to small bundles and the long-term stability of their resulting dispersions was much better than commercial surfactants. Furthermore, when thin films of PSSA-g-PANI/CNT are prepared from aqueous dispersion and their electrical conductivities are measured by the four probe technique, it is observed that their conductivities are in the range of 1.5-2.5 S/cm.
Keywords
Carbon nanotubes; Conducting polymer; Surfactant; Composite film;
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