Size of sodium dodecyl sulfate micelles in the presence of additives i. alcohols and other polar compounds

Thermodynamics and Micellar Properties of Tetradecyltrimethylammonium Bromide in Formamide–Water Mixtures

“…The above parameters are also presented in Table 3. It has been proposed (37,38) that the surface area per headgroup, a 0 , or its inverse the surface charge density is the most important controlling factor for micelle size, whereas the critical packing parameter (37), v/a 0 l C , controls the micelle shape. From data in Table 3 we can conclude that the presence of FA in the solvent system induces a reduction in the micelle aggregation number, produced by an increase in the surface area per headgroup of the surfactant.…”

The Change in the Properties of Sodium Dodecyl Sulfate Micelles upon Addition of Isomeric and Unsaturated Short-Chain Alcohols Probed by Photophysical Methods

“…The behavior of sodium dodecyl sulfate (SDS) micelles in the presence of n-alcohols has been extensively investigated (2,3,7,10,(12)(13)(14)(15)(16)(17)(18). However, micellization studies with hydrophilic alcohols and diols with the same number of carbons but different molecular structure have only recently been carried out (19,20).…”

Fluorescence of 8-Anilinonaphthalene-1-sulfonate and Properties of Sodium Dodecyl Sulfate Micelles in Water–Urea Mixtures

“…solutions. It has been found that urea (A) increases the criti-Similarly, urea was assumed to be a nonpenetrating agent cal micelle concentration of ionic (1, 4-7, 12, 15-17) and in a study performed by Gonzalez et al (12) on the effect nonionic (1,2,7,9) surfactants; (B) decreases the micellar of additives on the solubility of naphthalene derivatives in size of ionic (8,14,17) and nonionic (9) surfactants; (C) micellar solutions. Alternatively, results from recent studies increases the counterion dissociation degree of ionic micelles have been interpreted in favor of a direct mechanism of urea (5,8,15,16); (D) increases the cloud point of nonionic action on properties of micelles (1-4, 13, 15, 17).…”