Effect of surfactant on interfacial film and stability of highly concentrated emulsions stabilized by various binary surfactant mixtures

摘要: Abstract The interfacial properties of binary surfactant mixtures, prepared by mixing a poly(isobutenyl) succinic anhydride derivative with series non-ionic oil soluble (Spans) and water (Tweens) compounds varying structure (length, presence double bonds, number arms) hydrophobic tails, were investigated. Rosen method was used to characterize the synergism between two surfactants. various compositions in preparation super-concentrated (92.4 wt%) water-in-oil emulsions. interface layers determined Wilhelmy correlated time start crystallization oversaturated aqueous phase, stability aging resistance shearing during emulsification pumping. It shown that co-surfactant is main factor determining emulsions, it depends on co-surfactant. Stability found be much more sensitive Span than Tween structure. Some Tweens family enables provide quite acceptable for different technological applications such as droplet refinement production, an adequate long-term storage good pumping characteristics.