title: Structure of microparticles in solid-stabilized emulsions.
abstract: Emulsions of oil and water stabilized by adsorbed solid particles are known as solid-stabilized emulsions (often referred to as Pickering emulsions). Using confocal microscopy, we have studied the assembly of colloidal-sized polystyrene particles in poly(dimethylsiloxane)-in-water solid-stabilized emulsions. Monodisperse polystyrene particles, when included in the emulsions at low concentrations, were found to form small patches with local "hexagonal" order, separated by other particle-free domains. Polystyrene particles with different sizes (1 and 4 microm) and different wettability could simultaneously segregate to the emulsion interface; even mixtures of hydrophobic and hydrophilic solid particles were found to simultaneously segregate to the same interface.
authors.affiliation: Department of Chemical Engineering, Texas Tech University, MS 3121, Lubbock, Texas 79409, USA.
authors.forename: Sowmitri
authors.initials: S
authors.lastname: Tarimala
authors.forename: Lenore L
authors.initials: LL
authors.lastname: Dai