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On the possibility use polyaniline and polythiophenebased as gas sensors

F. TUDORACHE1,* , M. GRIGORAŞ2

Affiliation

  1. Faculty of Physics, “Alexandru Ioan Cuza” University, no. 11, King Carol I Blvd., 700506, Iasi, Romania
  2. “P. Poni” Institute of Macromolecular Chemistry, 41A Gr. Ghica Voda Alley, 700487, Iasi, Romania

Abstract

Three samples of semiconducting polymer, polyaniline, emeraldine base form (PAn-EB), polyaniline, emeraldine salt form (PAn-ES) and polythiophene (PT), were prepared and their sensing properties to reducing gases were investigated. The gas sensing characteristics were obtained by measuring the sensitivity as a function of various controlling factors, like operating temperature, composition and concentration of the gas, and finally the response time. The sensitivity of three semiconducting polymers to acetone, ethyl alcohol and liquefied petroleum gas (LPG) was compared. It was revealed that PAn-EB is the most sensitive to ethyl alcohol and liquefied petroleum gas, and can be used as gas sensor..

Keywords

Superheavy nucleus, Fusion reactions, Cross-section, Gas sensing.

Submitted at: Oct. 6, 2009
Accepted at: July 14, 2010

Citation

F. TUDORACHE, M. GRIGORAŞ, On the possibility use polyaniline and polythiophenebased as gas sensors, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 7, pp. 1577-1580 (2010)