(398h) The Rheology of Particle-Stabilized Emulsions

The ability of fine solid particles to irreversibly adsorb to fluid-fluid interfaces and stabilize emulsions was first discovered more than a century ago and has been exploited in a wide range of technologies from personal care products to food, oil recovery, and pharmaceuticals. Interest in using solid particles in lieu of surfactants for emulsion stabilization has seen a robust surge recently, due to their smaller environmental impact and the ability to use natural and abundant resources such as cellulose and silica for such formulations. However, the presence of solid particles at the fluid interfaces in these multiphase systems can dramatically impact their rheology in nontrivial ways. This talk will provide an overview of our efforts over the past decade to understand this problem. The talk will cover the rheology of several classes of solid-stabilized emulsions, from dilute systems under shear to concentrated emulsions, bridged emulsion gels, and bicontinuous interfacially jammed emulsion gels.