Journal of Nanoparticle Research

, Volume 11, Issue 5, pp 1167–1177

Polyaniline nanoparticles with controlled sizes using a cross-linked carboxymethyl chitin template

  • Tuspon Thanpitcha
  • Anuvat Sirivat
  • Alexander M. Jamieson
  • Ratana Rujiravanit
Research Paper

DOI: 10.1007/s11051-008-9515-8

Cite this article as:
Thanpitcha, T., Sirivat, A., Jamieson, A.M. et al. J Nanopart Res (2009) 11: 1167. doi:10.1007/s11051-008-9515-8
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Abstract

Polyaniline (PANI) nanoparticles were chemically synthesized in the presence of a cross-linked carboxymethyl chitin (CM-chitin) acting as a template. The reaction was performed under acidic conditions and the template was removed after the polymerization of aniline was completed. The morphology of the synthesized PANI was globular with a diameter in the nanometer range. The degree of cross-linking of the CM-chitin played an important role in determining the size of the obtained PANI nanoparticles, which decreased from approximately 392 to 160 nm with increase in concentration of the cross-linking agent, glutaraldehyde, from 0 to 9 μmol, respectively. At a higher glutaraldehyde concentration (18 μmol), an aggregated PANI network was observed due to the incomplete removal of the more highly cross-linked CM-chitin. Molecular characterization (including UV-Visible, FTIR, TGA, and XRD techniques) revealed that the structure of the synthesized PANI nanoparticles is identical to that of conventional PANI. A mechanism is proposed for the formation of PANI nanoparticles in the presence of the cross-linked CM-chitin template.

Keywords

PolyanilineNanoparticlesCross-linked carboxymethyl chitinHydrogelTemplateConductive polymers

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Tuspon Thanpitcha
    • 1
  • Anuvat Sirivat
    • 1
  • Alexander M. Jamieson
    • 2
  • Ratana Rujiravanit
    • 1
  1. 1.Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical CollegeChulalongkorn UniversityBangkokThailand
  2. 2.Department of Macromolecular ScienceCase Western Reserve UniversityOhioUSA