Electrostatic factor, liquid electrolytes

Another interesting experimental stndy of concentrated suspensions of hnman erythrocytes was performed by Znkoski and Saville. Although volume fractions as high as 75% were employed, the electrophoretic mobility changed by the factor (1 - ([)) in the whole concentration range, which was simply explained by the backflow of liquid necessary to conserve the snspension volnme. The electrostatic and hydrodynamic particle-particle interactions apparently canceled each other in these experiments. Note that the electrolyte concentration was relatively high and, contrary to the experiments of Deggelmann et al., " the EDL were thin in comparison with the particle size. 

---