Adsorption of alkyl trimethylammonium bromides at the water/air and water/hexane interfaces

Mixtures of catanionic surfactants can be superspreaders: Comparison with trisiloxane superspreader

“…Minimum attainable interfacial tension at water/air and water/alcane interfaces due to adsorption of individual ionic surfactants used is essentially higher than that of trisiloxane solutions: DoTAB enables lowering the water/air surface tension to ~38 mN/m and water/alcane interfacial tension to ~5 mN/m [22]. Very close value of water/air surface tension was found below for SOcS, whereas water/heptane interfacial tension was even higher than that of DoTAB:~10 mN/m (Fig.…”

“…As experimentally measurable quantities are advancing and receding contact angles, the best approximation for θ is considered to be static advancing contact angle [22]. Complete wetting occurs when the right hand site of Eq.…”

Dynamic adsorption of cetyl trimethyl ammonium bromide at decane/water interface

“…Other example is Frumkin equation, where the model has three parameters: with A is an additional parameter [18]. It also can be extended to include compressibility, Langmuir Compressibility (LC), Frumkin Compressibility (FC) and Frumkin Ionic Compressibility (FIC) [2]. However, the extension requires more parameters.…”

“…Adsorption of surfactants at oil/water interfaces has many important applications, which has been investigated both theoretically and experimentally [1][2][3][4][5][6]. These applications are widely used in different processes such as: enhanced oil recovery [7,8], pharmaceutical industry [9] biological and biochemical processes [10,11].…”

“…By applying the same model to the surfactant adsorption at both air/water and oil/water interfaces [2,20,21], the influences of oil/surfactant interaction can be quantified. In the literature, the interaction of the oil and surfactants is described by the values of adsorption parameters, especially m .…”