Journal of Colloid and Interface Science 502 (2017) 112–121 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Regular Article Dynamic electrophoretic mobility and electric permittivity of concentrated suspensions of plate-like gibbsite particles S. Ahualli, M.A. González, A.V. Delgado, M.L. Jiménez Department of Applied Physics, School of Science, University of Granada, 18071 Granada, Spain graphical a bstract ar ti c l e i nf o ab stra ct Article history: In this paper we present experimental results on the electrokinetic behavior of planar gibbsite particles in Received 16 February 2017 concentrated suspensions. The dc electrophoretic mobility measurements are in this case of little signif- Revised 21 April 2017 icance, as they are scarcely informative. In the present investigation, we show that the dielectric disper- Accepted 23 April 2017 sion and dynamic electrophoresis can in contrast provide such information. The complicating factors are Available online 2 May 2017 of course the non-spherical shape and the ﬁnite particle concentration, as no complete theory of these phenomena exists for such systems. We propose to use ﬁrst of all a model of dynamic electrophoresis Keywords: of spheroids in which the effect of volume fraction is considered by means
Journal of Colloid and Interface Science – Elsevier
Published: Sep 15, 2017
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