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Proceedings Paper

Humidity sensing with doped polyaniline
Author(s): Shilpa Jain; Sanjay Dnyane Shwar Chakane; S. V. Bhoraskar; A. B. Samui; V.N. Krishnamurthy
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Paper Abstract

Polyaniline(PANI) was doped with different dopants like camphosulphonic acid (CSA), diphenyl phosphate(DPPH), suiphonic acid(S), and Maleic acid (MAC) by chemical method. The samples were prepared in the form of pellets as well as films. Polyaniline doped with Maleic acid was found to be mechanically and chemically stable as compared to other dopants and therefore the effect of humidity on conductivity was further investigated. Films prepared out of styrene butyl acrylate copolymer with different concentrations of PANT Maleic acid were used for sensing humidity ranging between 20% to 90% relative humidity. A maximum change in the conductivity of three to four orders of magnitude was obtained for the Maleic acid doped polyaniline pellet while two order of magnitude change was obtained for the film samples over the range of humidity measured.

Paper Details

Date Published: 21 March 2001
PDF: 6 pages
Proc. SPIE 4235, Smart Structures and Devices, (21 March 2001); doi: 10.1117/12.420872
Show Author Affiliations
Shilpa Jain, Univ. of Pune (India)
Sanjay Dnyane Shwar Chakane, Univ. of Pune (India)
S. V. Bhoraskar, Univ. of Pune (India)
A. B. Samui, NMRL (India)
V.N. Krishnamurthy, Univ. of Pune (United States)

Published in SPIE Proceedings Vol. 4235:
Smart Structures and Devices
Dinesh K. Sood; Ronald Albert Lawes; Vasundara V. Varadan, Editor(s)

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