Adsorption of mixed cationic–non-ionic surfactants at the air/water interface

Adsorption of Nonionic Mixtures at the Air–Water Interface: Effects of Temperature and Electrolyte

“…The adsorbed amounts were determined using Eqs. [4] and [5]. The temperature of the solution was controlled to ±1…”

“…Extending some earlier reported results on the adsorption of the C 12 EO 3 /C 12 EO 8 mixture at the air-water interface (3,4), we have also investigated the effect of temperature and electrolyte on the surface composition of the same nonionic surfactant mixtures. We have previously reported some preliminary results on the effects on temperature on the adsorption of nonionic surfactants and nonionic surfactant mixtures (5). The purpose of this paper is to compare the effects of temperature and electrolyte, as different means of changing solvent quality, on nonionic surfactant adsorption.…”

The Structure of the Mixed Nonionic Surfactant Monolayer of Monododecyl Triethylene Glycol and Monododecyl Octaethylene Glycol at the Air–Water Interface

“…All the measurements were performed at 298 K, comon the SURF reflectometer (22) at the ISIS pulsed neutron pared to a cloud point of 348 K for C 12 EO 8 (25). source, using the ''white beam time of flight'' method.…”

Comparison of the Coadsorption of Benzyl Alcohol and Phenyl Ethanol with the Cationic Surfactant, Hexadecyl Trimethyl Ammonium Bromide, at the Air–Water Interface

“…For example, a comparison of the result for the mixtures C 16 TAB/dodecane (13), SDS/dodecanol (12), and C 16 TAB/C 12 E 6 (8) showed that the midpoint of the alkyl chain distribution of the cosurfactant (dodecane, dodecanol, C 12 E 6 ) was increasingly farther from the solvent interface, and from the other component, with increasing hydrophobicity (from C 12 E 6 to dodecane). In the case of the C 16 TAB/dodecane mixture, partial deuterium labelling of the C 16 TAB alkyl chain provided information on the change in conformation of the alkyl chain when dodecane is added.…”

“…The ± sign in Eqs. [8] and [9] reflects the phase uncertainty arising from Eq. [1], and in practice this does not present a problem for such systems.…”