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Electrochemical polymerization of aniline on carbon fibers in aqueous toluene sulfonate solution
Author(s) -
Iroh Jude O.,
Rajagopalan Ramakrishnan
Publication year - 2000
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/(sici)1097-4628(20000606)76:10<1503::aid-app3>3.0.co;2-b
Subject(s) - polyaniline , aniline , polymerization , electrolyte , electrochemistry , sulfonate , aqueous solution , adsorption , polymer chemistry , materials science , polymer , chemical engineering , chemistry , inorganic chemistry , sodium , organic chemistry , electrode , engineering
Polyaniline has been successfully formed by aqueous electrochemical polymerization on carbon fibers. The coatings were formed under potentiostatic conditions with toluene‐4‐sulphonic acid sodium salt as the electrolyte. The effect of monomer concentration, electrolyte concentration, and the applied potential on the rate of polymerization were studied. The amount of polyaniline coatings formed on carbon fibers increased with increased aniline and electrolyte concentration. Increasing the applied potential also increased the weight of coatings formed on the fibers. The presence of positive y‐intercept in the weight gain plots are attributed to the adsorption of the electrolyte on the fibers before electropolymerization. The effect of the electrochemical parameters on the degradation of the polymer has been analyzed using infrared spectroscopy. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 1503–1509, 2000