Effect of dopant and clay on nanocomposites of polyaniline (PAN) intercalated into Na+-montmorillonite (Na+-MMT)

B. H. Kim, J. H. Jung, J. W. Kim, H. J. Choi, Jinsoo Joo

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Abstract

The nanocomposites of polyaniline (PAN) and Na+-montmorillonite (Na+-MMT) were synthesized by emulsion polymerization using dodecylbenzenesulfonic acid (DBSA) or camphorsulfonic acid (CSA) as dopant and emulsifier. In the X-ray diffraction patterns of the systems, we observed that the layer of conducting PAN-DBSA or PAN-CSA between the clay layers was in nanoscale layers (<10 Å). The temperature dependence of dc conductivity [σdc(T)] for the nanocomposites followed a quasi-one dimensional (1D) variable range hopping (VRH) model. The σdc(T) varied with the dopant used and the molar ratio. From temperature dependent EPR experiments, we obtained the magnetic susceptibility and the line width of the system. The Na+-MMT clay layer plays important role for interchain interaction of the system. The effects of dopant and the layer of Na+-MMT on charge transport and structure are discussed.

Original languageEnglish
Pages (from-to)1311-1312
Number of pages2
JournalSynthetic Metals
Volume121
Issue number1-3
DOIs
Publication statusPublished - 2001 Mar 15

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Keywords

  • Nanocomposite
  • Polyaniline and derivatives
  • Transport measurements
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

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