Dynamic Interfacial Tensions of Aqueous Triton X-100 Solutions in Contact with Air, Cyclohexane,n-Heptane, andn-Hexadecane

The effect of alkane tail length of C E8 surfactants on transport to the silicone oil–water interface

“…The smaller maximum packing concentration observed at the oil-water interface is consistent with a previous equilibrium study conducted at multiple oil-water interfaces for different C 12 E j surfactants [39], as well as a previous study comparing equilibrium isotherm data at air-water and oil-water interfaces using different types of surfactants, e.g. Triton X-100 [17].…”

“…Different techniques have been developed for oil-water studies such as the growing drop technique [15,16], the drop volume method [17], the controlled drop tensiometer [18], a microchannel flow tensiometer [19], and the pendant drop technique [20][21][22]; each has advantages and disadvantages. The pendant drop technique is chosen for this study for its use of a static drop shape with no bulk convection.…”

Dynamic Interfacial Tension of Surfactant Mixtures at Liquid–Liquid Interfaces

“…Some researchers have suggested a finite difference scheme to solve the initial and boundary conditions of a two-surfactant mixture for a diffusion-controlled model (5). If the concentration at time step j is known, then at time j ϩ 1, for component 1, [11] C i ϭ c i /c 0i [12] ⌫ i ϭ ⌫ i ͑t͒/⌫ 0i . [13] In Eq.…”

The Behavior of Sorbitan Surfactants at the Water–Oil Interface: Straight-Chained Hydrocarbons from Pentane to Dodecane as an Oil Phase

“…Also, the composition of the oil phase has not been of great interest. In many studies quite complicated oil phases, e.g., mineral oil (7,14,15) or only one or few pure hydrocarbons have been used as the oil phase (6,(16)(17)(18)(19)(20)(21)(22).…”