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Plasma treatment of polyaniline films: Effect on the intrinsic oxidation states

Published online by Cambridge University Press:  31 January 2011

E. T. Kang ,
K. Kato ,
Y. Uyama  and
Y. Ikada
E. T. Kang
Affiliation:
Department of Chemical Engineering, National University of Singapore, Kent Ridge, Singapore 0511
K. Kato
Affiliation:
Research Center for Biomedical Engineering, Kyoto University, 53 kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606, Japan
Y. Uyama
Affiliation:
Research Center for Biomedical Engineering, Kyoto University, 53 kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606, Japan
Y. Ikada
Affiliation:
Research Center for Biomedical Engineering, Kyoto University, 53 kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606, Japan
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Abstract

Surface modification of emeraldine (EM) and nigraniline (NA) base films by argon plasma treatment was investigated by x-ray photoelectron spectroscopy (XPS). Argon plasma treatment, followed by atmospheric exposure, results in the oxidation of some carbon atoms, first to C–O species and then to C = O and COOH species for samples with extended plasma treatment time. Most important of all, Ar plasma treatment and the accompanied carbon oxidation readily cause a decrease in the intrinsic oxidation state ([=N— ]/[—NH—] ratio) of the aniline polymers.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 6 , June 1996 , pp. 1570 - 1573
Copyright
Copyright © Materials Research Society 1996

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