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Electrorheological characteristics of polyaniline and its copolymer suspensions with ionic and nonionic substituents

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Abstract

Electrorheological (ER) characteristics of ER fluids, composed of suspensions of semiconducting polyaniline and two different copolyaniline particles in silicone oil, were determined experimentally. Ionic sodium diphenylamine sulfonate and nonionic o-ethoxyaniline were used to synthesize copolyanilines, i.e. N-substituted copolyaniline and poly(aniline-co-o-ethoxyaniline), respectively. ER fluids composed of these three different polymers were compared with respect to their rheological properties under an applied electric field. It was found that ER fluids containing a copolymer with an ionic group exhibited the highest ER performance among polyaniline and its copolymer systems in a shear-rate region above 1 s−1.

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Inha University Inchon 402-751 Korea e-mail: hjchoi@inha.ac.kr, , , , , , KR

    M. S. Cho, J. W. Kim & H. J. Choi

  2. The Lubrizol Co., 29400 Lakeland Boulevard, Wickliffe, OH 44092, USA, , , , , , US

    R. M. Webber

  3. Department of Chemical Engineering Carnegie Mellon University, Pittsburgh PA 15213, USA, , , , , , US

    M. S. Jhon

Authors
  1. M. S. Cho
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  2. J. W. Kim
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  3. H. J. Choi
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  4. R. M. Webber
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  5. M. S. Jhon
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Received: 22 February 1999 /Accepted in revised form: 25 August 1999

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Cho, M., Kim, J., Choi, H. et al. Electrorheological characteristics of polyaniline and its copolymer suspensions with ionic and nonionic substituents. Colloid Polym Sci 278, 61–64 (2000). https://doi.org/10.1007/s003960050009

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  • DOI: https://doi.org/10.1007/s003960050009

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