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Control of Polyaniline Particle Shapes

✍ Scribed by Woo-Hyuk Jung; Young Moo Lee; Nam-Ju Jo; Jang-Oo Lee

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
840 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Needle‐like poly(aniline p‐toluenesulfonic acid) complex aggregates were synthesized by oxidative polymerization, yielding conductivities of up to 3 S · cm^−1^ and maximum aspect ratios of 26. Rod‐like aggregates as precursors to be developed into needle‐like aggregates were obtained with 1 to 2 h APS addition time at 15 °C. Flake‐like polyanilines were prepared at −2 or +20 °C with 1.9 to 2.5 h of APS addition time, giving aspect ratios of 2 to 10. Plate‐like polyaniline aggregates emerged when xylene was added, and an optimum xylene concentration was 15 vol.‐%, giving 1.3 S · cm^−1^ conductivity. The polyanilines were characterized by optical microscopy, SEM and UV‐vis/NIR spectroscopy.

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