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Polyaniline–maleicacid–dodecylhydrogensulfate salt as sensor material for toxic gases
Author(s) -
Palaniappan Srinivasan,
Saravanan Chandrasekaran
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.32347
Subject(s) - polyaniline , materials science , chemical engineering , emulsion polymerization , coating , polymerization , ceramic , emulsion , salt (chemistry) , conductive polymer , formamide , nuclear chemistry , composite material , polymer , chemistry , organic chemistry , engineering
This article reports the results of novel polyaniline material as gas sensor, capable of operating at room temperature for toxic gases. Polyaniline–maleicacid–dodecylhydrogensulfate salt (PANI‐MA‐DHS) was prepared by emulsion polymerization pathway, which is soluble in N, N ‐dimethyl formamide. PANI‐MA‐DHS was coated on a ceramic bead by simple brush coating method and used as sensor material. The resistance change of PANI‐MA‐DHS material for NH 3 , CO 2 , SO 2 , and H 2 S gases at different concentrations (10, 100, 1000, and 10,000 ppm level) was monitored for sensor characteristics. The stability of the polyaniline material under continuous exposure of gas level from 10 to 10,000 ppm was also studied. This novel gas sensor material has advantages such as excellent sensing ability, low cost, fast regeneration time (∼ 1–2 min), simple experimental setup, and operable at room temperature. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010