TOXIC GAS AND VAPOR DETECTION BY POLYANILINE GAS SENSORS

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HOSSEINI SEYED HOSSEIN; ABDI OSKOUEI S.H.; ENTEZAMI A.A.

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Journal Paper

Paper Information

Journal: Iranian Polymer Journal Year:2005 | Volume:14 | Issue:4 (58) Page(s): 333-344

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Title

TOXIC GAS AND VAPOR DETECTION BY POLYANILINE GAS SENSORS

Author(s)

HOSSEINI SEYED HOSSEIN | ABDI OSKOUEI S.H. | ENTEZAMI A.A. | Issue Writer Certificate

Keywords

GAS SENSOR

POLYANILINE SENSOR

CONDUCTING POLYMER

X-RAY FLUORESCENCE (XRF)

MASS CHANGES

CONDUCTIVITY CHANGES

Abstract

The response mechanism of polyaniline to a selection of gases and vapours was investigated by measuring its conductance and MASS CHANGES by using four probe and elemental analysis methods, and X-Ray fluorescence (XRF) technique. Preparated films were exposed to hydrogen halides, hydrogen cyanide, hydrogen sulphide, halogens, acetic acid, mono, di, and tri-chloroacetic acid, formaldehyde , hexachloroacetone, 1,3,5-trichloromethyl benzene, methylbenzyl bromide, bromoacetone and cyanogen bromide. It is observed that the polyaniline conductance changes are partly due to two-stage sorption perhaps involving the swelling of the polymer and then gas diffusion. All the films were exposed to dilute ammonia solution or vapours organic solvents and swelled before doping, which could modify the mass and electrical measurements. It is demonstrated that slightly additional amounts of HCl gas in tested gases would significantly influence the conductivity. It was concluded that the response mechanism of polyaniline sensing different gases and vapours is due to a mixed response involving electronic and physical effects.

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APA: Copy

HOSSEINI, SEYED HOSSEIN, ABDI OSKOUEI, S.H., & ENTEZAMI, A.A.. (2005). TOXIC GAS AND VAPOR DETECTION BY POLYANILINE GAS SENSORS. IRANIAN POLYMER JOURNAL (ENGLISH), 14(4 (58)), 333-344. SID. https://sid.ir/paper/530745/en

Vancouver: Copy

HOSSEINI SEYED HOSSEIN, ABDI OSKOUEI S.H., ENTEZAMI A.A.. TOXIC GAS AND VAPOR DETECTION BY POLYANILINE GAS SENSORS. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2005;14(4 (58)):333-344. Available from: https://sid.ir/paper/530745/en

IEEE: Copy

SEYED HOSSEIN HOSSEINI, S.H. ABDI OSKOUEI, and A.A. ENTEZAMI, “TOXIC GAS AND VAPOR DETECTION BY POLYANILINE GAS SENSORS,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 14, no. 4 (58), pp. 333–344, 2005, [Online]. Available: https://sid.ir/paper/530745/en

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