Electroacoustic characterization of bidisperse suspensions Jiménez Olivares, María Luisa Arroyo Roldán, Francisco J. Ahualli Yapur, Silvia Alejandra Rica Alarcón, Raúl Alberto Delgado Mora, Ángel Vicente Electrokinetics ESA Polydisperse suspensions Electroacoustics Electroacoustic techniques are promising tools for the size determination and electrokinetic characterization of concentrated colloidal suspensions. When particles are not homogeneous in size and/or density, the dynamic mobility obtained is a kind of average of the mobilities of every particle. In this paper, we try to discern which averaging procedure provides a better description of the dynamic mobility of bidisperse suspensions consisting of a mixture of two very different types of particles. The results show that the amplitude of the sound wave induced by an applied ac field (electrokinetic sonic amplitude) is not just the sum of the amplitudes of the waves generated by every particle but has a larger contribution from the larger particles, although the small size entities considerably influence the behaviour of the latter because of their interference in the fluxes of the fluid and ions around them. 2013-11-12T10:32:11Z 2013-11-12T10:32:11Z 2007 info:eu-repo/semantics/article Jiménez, M.L.; et al. Electroacoustic characterization of bidisperse suspensions. Croatica Chemica Acta, 80(3-4): 453-459 (2007). [http://hdl.handle.net/10481/29098] 0011-1643 1334-417X http://hdl.handle.net/10481/29098 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Croatian Chemical Society