Thermodynamic Study on the Surface Formation of the Mixture of Water and Ethanol

Adsorption Isotherms for Concentrated Aqueous-Organic Solutions (CAOS)

“…This indeed has been done for surfactant solutions (3)(4)(5)(6)(7)(8)(9)(10), which are usually very dilute solutions. However, for concentrated aqueous organic solutions (CAOS), it seems to have been done only rarely (11). As can be expected, it will be demonstrated below that the assumptions employed for surfactant solutions are not suitable for CAOS.…”

New Thermodynamics for Evaluating the Surface‐phase Enrichment in the Lower Surface Tension Component

“…In particular, the surface tension of aqueous ethanol solutions has been experimentally measured many times, with one of the earliest data sets being obtained by Bircumshaw [40] and employed by Guggenheim and Adam [41] in their analysis of the Gibbs adsorption equation. In the present study, we selected the accurate and extensive surface tension measurements at 298.15 K of Aratono et al [42] taken from the table given in Strey et al [43] Thermo-physical data of the pure components from various sources are presented in Table 1 and molar masses were calculated by using IUPAC 1995 atomic weights of the elements. [48] The surface-tension data of aqueous ethanol consists of values for 31 different mole fractions, among which 20 data points were determined at ethanol mole fractions between 0.0010 and 0.1102.…”

The Excess Thermodynamic Quantities of Adsorption of a Binary Nonionic Surfactant Mixture

“…[12] to the m vs X 2 curve at a given surface tension. The m vs X 2 curves are illustrated by the solid lines at three surface tensions and at 298.15 K in Fig.…”