Puthampadath A. Francis Xavier

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Publications (1)2.23 Total impact

  • Article: Novel polypyrrole films with excellent crystallinity and good thermal stability
    Pullarkat P. Jeeju, Sreekanth J. Varma, Puthampadath A. Francis Xavier, Augustine M. Sajimol, Sankaran Jayalekshmi
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    ABSTRACT: Polypyrrole has drawn a lot of interest due to its high thermal and environmental stability in addition to high electrical conductivity. The present work highlights the enhanced crystallinity of polypyrrole films prepared from the redoped sample solution. Initially hydrochloric acid doped polypyrrole was prepared by chemical oxidative polymerization of pyrrole using ammonium peroxidisulphate as oxidant. The doped polypyrrole was dedoped using ammonia solution and then redoped with camphor sulphonic acid. Films were coated on ultrasonically cleaned glass substrates from the redoped sample solution in meta-cresol. The enhanced crystallinity of the polypyrrole films has been established from X-ray diffraction (XRD) studies. The room temperature electrical conductivity of the redoped polypyrrole film is about 30 times higher than that of the hydrochloric acid doped pellet sample. The results of Raman spectroscopy, Differential scanning calorimetry (DSC) and Thermogravimetric analysis (TGA) of the samples s
    Materials Chemistry and Physics 06/2012; 134(2–3):803-808. · 2.23 Impact Factor
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