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Preparation of aqueous polyaniline dispersions by micellar-aided polymerization

✍ Scribed by Lei Yu; Jeong-II Lee; Kwon-Woo Shin; Chan-Eon Park; Rudolf Holze

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
244 KB
Volume
88
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Polyaniline (PAn) dispersed in water was prepared with sodium dodecylsulfonate (SDS) as a surfactant with varying concentrations of aniline and HCl and molar ratios of SDS/aniline. The PAn dispersion was homogeneous and stable, and its pH value could be adjusted. The conductivity of PAn powder, precipitated from this dispersion, was as high as 20 S/cm. The transmission electron microscopy morphology of PAn assembled in the dispersion was particle‐like, fiber‐like, or coil‐like, depending on the initial concentration of SDS and aniline. The polymerization of aniline was accelerated by SDS, which was confirmed by open‐circuit potential measurement during the polymerization process. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1550–1555, 2003

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