Abstract
The electroacoustic and shear yield stress response of concentrated alumina and kaolin suspensions have been measured across a range of pH conditions and volume fractions. The inter-relationship between the surface properties as measured electrokinetically and the shear yield stress is shown to scale in a straight forward manner for alumina particles and a qualitative description has been developed from kaolin suspensions. The pair-wise interaction between particles over the range of volume fractions has been demonstrated to remain constant. The use of a semi-empirical electroacoustic volume fraction correction to the zeta potential, integral to the electroacoustic technique, appears reasonable on the basis of the results presented herein.
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