Adsorption of nanosheet particles to surfactant-laden interfaces

It is known that particles with appropriate wettability spontaneously adsorb to neat water-oil interfaces. The combined effect of particles and surfactants at interfaces, however, is still poorly understood. In this work, we show that selected oil-soluble surfactants promote the adsorption of hydrophilic nanosheet particles and enhance bulk oil-in-water emulsion stability. Using microfluidics, we evaluate interface stability against coalescence and the competitive adsorption dynamics of particles versus surfactant for nanosheets of varying degrees of surface activity.