Korea-Australia Rheology Journal, Vol.28, No.4, 275-279, November, 2016
Electrorheological fluids of polypyrrole-tin oxide nanocomposite particles
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The electrorheological (ER) response of polypyrrole(PPy)-tin oxide nanocomposite ER fluids increased with the increase in the tin oxide/pyrrole weight ratio, particle volume fraction, and electric field strength. The dielectric properties and direct current (dc) conductivity of PPy-tin oxide nanocomposite particles and the dielectric properties of PPy-tin oxide nanocomposite ER fluids agreed with the ER behaviors. The ER behavior of PPy-tin oxide nanocomposite ER fluids was well fitted to τ = 0.0248φE1.5 and showed a transition from that of the polarization model (τ ~ E2) to that of the conduction model (τ ~ E1.5) depending on the tin oxide/pyrrole weight ratio.
Keywords:electrorheology;polypyrrole-tin oxide particles;conducting polymer;nanocomposite;suspension
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