dodecane-in-synthetic seawater (ssw) emulsions formed with montmorillonite (mmt) clay microparticles modified with bis (2-hydroxyethyl) oleylamine were stable against coalescence, even at clay concentrations down to 0.1% w/v.
As little as 0.001% w/v surfactant lowered the hydrophilicity of the clay to a sufficient level for stabilization of oil-in-SSW emulsions.