1. Surface Tension and Adsorption Studies by Drop Profile Analysis Tensiometry
- Author
-
V. B. Fainerman, Alexander V. Makievski, Eugene V. Aksenenko, Talmira Kairaliyeva, N. Mucic, and Reinhard Miller
- Subjects
Maximum bubble pressure method ,General Chemical Engineering ,Bubble ,Analytical chemistry ,Thermodynamics ,Review Article ,02 engineering and technology ,010402 general chemistry ,Surface pressure ,01 natural sciences ,Viscoelasticity ,Bubble and drop profile analysis tensiometry ,Physics::Fluid Dynamics ,Surface tension ,Adsorption ,Pulmonary surfactant ,Physics::Chemical Physics ,Physical and Theoretical Chemistry ,Chemistry ,Drop (liquid) ,Surfactant depletion due to adsorption ,021001 nanoscience & nanotechnology ,Surfactant adsorption layers ,0104 chemical sciences ,Surfaces, Coatings and Films ,Condensed Matter::Soft Condensed Matter ,0210 nano-technology - Abstract
Surface tension and dilational viscoelasticity of solutions of various surfactants measured with bubble and drop profile analysis tensiometry are discussed. The study also includes experiments on the co-adsorption of surfactant molecules from a solution drop and alkane molecules from saturated alkane vapor phase. Using experimental data for 12 surfactants with different surface activities, it is shown that depletion due to adsorption of surfactant from the drop bulk can be significant. An algorithm is proposed quantitatively to take into consideration the depletion effect which is required for a correct description of the co-adsorption of alkanes on the solution drop surface and the correct analysis of experimental dynamic surface tension data to determine the adsorption mechanism. Bubble and drop profile analysis tensiometry is also the method of choice for measuring the dilational viscoelasticity of the adsorbed interfacial layer. The same elasticity moduli are obtained with the bubble and drop method only when the equilibrium surface pressures are sufficiently small (Π
- Published
- 2017