Abstract
Abstract The stability of concentrated colloidal dispersions of submicron carbon black particles in solutions of Aerosol-OT in p-xylene is discussed. Electrostatic and electrodynamic forces compete leading to coagulation of the primary particles resulting in increasing particle radius. Growth continues until electrostatic stabilisation dominates. These stable dispersions are characterised by particle size, electrophoresis and Theological measurements. The effect of ionic strength is studied and discussed in terms of fundamental electric double layer theory. This work is of significance to practical concentrated dispersions in media where the dielectric constant is very low
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