Modeling Mixed Surfactant Systems

Study of mixtures of n-dodecyl-β-d-maltoside with anionic, cationic, and nonionic surfactant in aqueous solutions using surface tension and fluorescence techniques

“…4 and Table 3. Values obtained for cmcs are in agreement with those reported in the literature [11,13,21]. In these systems, pentaethylene glycol monododecyl ether is more surface active than sugar-based surfactants, even though both have the same hydrocarbon chain.…”

“…To maximize the beneficial synergistic effects, it is useful to understand interactions among surfactants in mixtures. Holland and Roubingh [20,21] have developed the regular solution theory (RST) for binary mixtures in solution with basic assumption that the entropy of mixing is zero and only enthalpy change contributes to nonideality. Interaction parameter β was introduced empirically to measure deviation of molecular interactions from ideality [22].…”

Comparing Decyl-β-maltoside and Octaethyleneglycol Mono n-Decyl Ether in Mixed Micelles with Dodecyl Benzenesulfonate

“…The negative deviation from the ideal case is indicative of an attractive net interaction between the head groups of the anionic and nonionic surfactants. β CMC parameters for anionic/nonionic surfactant mixtures are typically found in the vicinity of −2 (20). Two reasons have been given for a negative net interaction between anionic and nonionic surfactants (21).…”

Influence of Inorganic Electrolyte Concentration on Properties of Anionic–Cationic Adsorption Films

“…However, Hoff-A regular solution model is often used to describe nonideal mann and Pössnecker (18) noticed recently that the same behavior of mixed micelles and monolayers, consisting of expressions for activity coefficients of the components as different kinds of surfactants (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11) This equation for i Å 1 assumes the form where x 1 and 1 0 x 1 Å x 2 are the mole fractions of the components in the mixture and b is a parameter characteriz-DG E Å x 1 (1 0 x 1 )A 1 [5] ing the mutual interactions of the components. This parameter assumes negative values in the case of attractive interac-that is analogous to Eq.…”