Water-dispersible nanocomposites of polyaniline and montmorillonite

Mukul Biswas, Suprakas Sinha Ray

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

The polymerization of aniline (ANI) in aqueous medium in the presence of (NH4)2S2O8 and montmorillonite (MMT) resulted in the formation of a nanocomposite (PANI-MMT). The inclusion of PANI in the composite was confirmed by FTIR studies. The extent of PANI loading in the composite increased with ANI concentration at a fixed oxidant/MMT amount and with the oxidant amount at a fixed ANI and MMT weight, but decreased with an MMT amount at a fixed ANI and oxidant level. TGA revealed a higher stability for the PANI-MMT composite relative to PANI and confirmed a PANI loading of ca. 51% in the composite. The conductivity increased in all the cases. XRD analysis revealed no expansion of the d001 spacing at 9.8 angstrom, implying no intercalation of PANI within the MMT layers. Scanning electron micrography studies revealed interesting morphological features for the composites. Transmission electron micrography analysis revealed distinctive features and confirmed the formation of PANI-MMT composite particles of diameters in the 300- to 400-nm range. These composites could be obtained as stable colloids in the presence of poly (N-vinyl pyrrolidone) under selective conditions.

Original languageEnglish
Pages (from-to)2948-2956
Number of pages9
JournalJournal of Applied Polymer Science
Volume77
Issue number13
DOIs
Publication statusPublished - Sept 2000
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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