Humidity sensing with doped polyaniline

Shilpa Jain; Sanjay Dnyane Shwar Chakane; S. V. Bhoraskar; A. B. Samui; V.N. Krishnamurthy

doi:10.1117/12.420872

21 March 2001 Humidity sensing with doped polyaniline

Shilpa Jain, Sanjay Dnyane Shwar Chakane, S. V. Bhoraskar, A. B. Samui, V.N. Krishnamurthy

Proceedings Volume 4235, Smart Structures and Devices; (2001) https://doi.org/10.1117/12.420872
Event: Smart Materials and MEMS, 2000, Melbourne, Australia

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.

Citation Download Citation

Shilpa Jain, Sanjay Dnyane Shwar Chakane, S. V. Bhoraskar, A. B. Samui, and V.N. Krishnamurthy "Humidity sensing with doped polyaniline", Proc. SPIE 4235, Smart Structures and Devices, (21 March 2001); https://doi.org/10.1117/12.420872

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