Bulletin of Materials Science

, Volume 24, Issue 6, pp 563–567 | Cite as

Phase change induced by polypyrrole in iron-oxide polypyrrole nanocomposite

  • Komilla Suri
  • S. Annapoorni
  • R. P. Tandon
Article

Abstract

Nanocomposites of polypyrrole and iron oxide were prepared using simultaneous gelation and polymerization processes. Varied amounts of pyrrole monomer were added to a solution containing iron nitrate as precursor and 2-methoxy ethanol as solvent. The presence of oxide and polypyrrole was confirmed by using X-ray and FTIR techniques. Some of these nanocomposites exhibited magnetic behaviour. SEM studies of powders indicated presence of nanosized particles. Electrical conductivity studies of powders showed a slight variation in conductivity for lower concentration of pyrrole, with a sudden increase in conductivity at 15% of pyrrole concentration. A transition from a nonmagnetic to magnetic phase was also observed at the same concentration.

Keywords

Polypyrrole iron oxide nanocomposite sol-gel 

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Copyright information

© Indian Academy of Sciences 2001

Authors and Affiliations

  • Komilla Suri
    • 1
  • S. Annapoorni
    • 1
  • R. P. Tandon
    • 1
  1. 1.Department of Physics and AstrophysicsUniversity of DelhiDelhiIndia

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