Synthesis and Electrorheological Effect of the Suspensions Composed of Nano Sized Hollow Polyaniline Derivatives

  • Published : 2006.06.01

Abstract

The electrorheology of hollow PANI derivative suspensions in silicone oil was investigated by varying the electric fields and shear rates, respectively. The hollow PANI derivative susepnsions showed a typical electrorheological (ER) response caused by the polarizability of an amide polar group and shear yield stress due to the formation of chains upon application of an electric field. The shear stress for the hollow PANI succinate suspension exhibited an electric field power of 0.67. On the basis of the experimental results, the newly synthesized hollow PANI derivative suspensions were found to be an anhydrous ER fluid.

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References

  1. Winslow, W.M., Induced Fibration of Suspension, J. Appl. Phys., Vol. 20, pp. 1137-1140, 1949 https://doi.org/10.1063/1.1698285
  2. Block, H. and Kelly, J.P., Electrorheology, J. Phys. D: Appl. Phys., Vol. 21, pp. 1661-1667, 1988 https://doi.org/10.1088/0022-3727/21/12/001
  3. Conrad, H. and Chen, Y., Electrorheological Properties and the Strength of Electrorheological Fluids, Progress in Electrorheology, edited by K. O. Havelka and F.E. Filisko (Plenum Press, New York), pp. 55-65, 1995
  4. Klingberg, D. J. and Zukoski, C. F., Studies on the SteadyShear Behavior of Electrorheological Suspensions, Langmuir, Vol. 6, pp. 15-24, 1990 https://doi.org/10.1021/la00091a003
  5. Gow, C. J. and Zukoski, C. F., The Electrorheological Properties of Polyaniline Suspension, J. Colloid Interface Sci., Vol. 136, pp. 175-188, 1990 https://doi.org/10.1016/0021-9797(90)90088-6
  6. Davis, L. C. , Polarization Forces and Conductivity Effects in Electrorheological Fluids, J. Appl. Phys. Vol. 72, pp. 13341340, 1992 https://doi.org/10.1063/1.351743
  7. Uejima, H., Dielectric Mechanism and Rheological Properties of Electro-Fluids, Jpn. J. Appl. Phys., Vol. 11, pp. 319-326, 1972 https://doi.org/10.1143/JJAP.11.319
  8. Li, Y., Chen, Y. and Conrad, H. , Effect of Strain Rate in the Quas-Static Regime on the Strength of Electrorheological Fluids, ASME, Vol. 235, pp. 29-36, 1995
  9. Block, H. and Kelly, J. P., Materials and Mechanism in Electrorheology, Langmuir, Vol. 6, pp. 6-14, 1990 https://doi.org/10.1021/la00091a002
  10. Bloodworth, R. and Wendt, E., Electrorheological Effect of Polyurethan Suspension, Progress in Electrorheology, edited by K. O. Havelka and F. E. Filisko (Plenum Press, New York), pp. 185-192, 1995
  11. Choi, U. S., Electrorheological Properties of Chitosan Suspension, Colloids and Surfaces, Vol. 157, pp. 193-202, 1999 https://doi.org/10.1016/S0927-7757(99)00051-5
  12. Saito, T., Anzai, H.,Kuroda, S., Electrorheological Particles Composed of Polymer Core with Controlled Diameter and Electro-conductivity, Int. J. Mod. Phys. B 13, pp. 1698-1696, 1999. Chitosan Phosphate Suspension, J. Ind. Eng. Chem., Vol. 11, pp. 605-609, 2000
  13. Menno, G,.D., Alain, G., Colloid Polym. Sci. Vol. 281, pp. 105, 1992
  14. Conrad, H.,Chen, Y. and Sprecher, A., The Strength of Electrorheological Fluids, J. of Modn. Phys. B, Vol. 16, pp. 2575-2583, 1992