Surface Modified Loaded in Polyaniline by Sodium Dodecyl Benzene Sulphonic Acid for Humidity Sensor

Polyaniline-CaTiO 3 nanocomposites with their various weight percentages were prepared by chemical oxidative in situ polymerization technique. The prepared composites were characterized by Fourier transform infrared spectroscopy, scanning electronic microscope, and X-ray diffraction. The temperature...

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Bibliographic Details
Published inIEEE sensors journal Vol. 12; no. 9; pp. 2817 - 2823
Main Authors Parveen, A., Koppalkar, A. R., Roy, A. S.
Format Journal Article
LanguageEnglish
Published IEEE 01.09.2012
Subjects
Calcium titanate
Chemicals
Compounds
conducting polymers
nanocomposite
Nanocomposites
nanoscopic textures
Plastics
polyaniline
Powders
sensor properties
X-ray diffraction
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Summary:Polyaniline-CaTiO 3 nanocomposites with their various weight percentages were prepared by chemical oxidative in situ polymerization technique. The prepared composites were characterized by Fourier transform infrared spectroscopy, scanning electronic microscope, and X-ray diffraction. The temperature-dependent dc conductivity of polyaniline-CaTiO 3 nanocomposite was studied within the range of 40-200 ° C and found that 50 wt% shows high conductivity compared to other composites. Humidity sensor properties of polyaniline-CaTiO 3 nanocomposite show better sensing properties and exhibit good linearity in sensing response curve, which discuss the implications of distortions and nonstoichiometry on their physical properties. Among all composites, 50 wt% of polyaniline-CaTiO 3 nanocomposites show high sensitivity up to ~ 90% and their response-recovery times are 500 and 453 s, respectively.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2012.2203455