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Spectroscopic and electrical properties of polyaniline/CeO 2 composites and their application as humidity sensor
Author(s) -
Parvatikar Narsimha,
Jain Shilpa,
Bhoraskar S. V.,
Ambika Prasad M. V. N.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24636
Subject(s) - polyaniline , materials science , polymerization , polymer , oxidizing agent , relative humidity , fourier transform infrared spectroscopy , humidity , thermal stability , conductive polymer , composite material , polymer chemistry , chemical engineering , conductivity , chemistry , organic chemistry , physics , engineering , thermodynamics
Polyaniline/CeO 2 composites were synthesized by in situ chemical polymerization method using ammonium persulphate as an oxidizing agent. This is the single step polymerization process for the direct synthesis of emeraldine salt phase of polymer. The polymers were characterized by using FTIR spectral analysis, SEM, and XRD studies. Formation of conducting emeraldine salt phase is confirmed by spectroscopic techniques. High temperature conductivity measurements show “thermal activated behavior.” The change in resistance with respect to percentage relative humidity (% RH) is observed, when the pressed pellets of the polymer were exposed to the broad range of humidity (humidity ranging between 10 and 95% RH). © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102:5533–5537, 2006