Calorimetric observations of the sphere-rod transition of sodium dodecyl sulfate: effects of electrolytes and nonelectrolytes at 25.degree.C

A phenol-induced structural transition in aqueous cetyltrimethylammonium bromide solution

“…Nature and size of the hydrocarbon tail, polar head group and the counterion of the surfactant strongly influence sphere-to-rod transitions. It is well known that salts such as KBr and sodium salicylate (NaSal) induce pronounced growth of CTAB micelles due to screening of the electrostatic repulsion of head groups [9][10][11][12][13]. The size and shape of the micelles are influenced by the counterion distribution or condensation on the micellar surface [14].…”

Effect of alcohol addition to the aqueous phase on the thermal effects of micellization of cationic benzyldimethyldodecylammonium bromide and its adsorption onto porous and nonporous silicas

“…The solubilization of primary alcohols by cationic and anionic surfactant micelles has been intensively studied [3][4][5][6][7][8][9][10][11][12][13]. These additives are known to promote mixed micelle formation in aqueous solution, thereby increasing the flexibility of micellar membranes.…”

“…It was also suggested that, when the saturation of alcohol in the palisade layer is attained near the end of the solubility limit, further increases in the additive content may lead to its penetration into the micelle core. Light-scattering, calorimetric, and small-angle neutron-scattering studies [6,9,11] provided experimental evidence for the sphere-to-rod transition of SDS micelles upon addition of butanol, pentanol, and hexanol in aqueous salt solutions.…”

Effects of Surfactant Aggregation and Adsorption on Steel Corrosion Inhibition in Salt Solution

“…The predicted cmc for all surfactants in Figure 8 match very well with the experiment except that slight deviation appears for C 12 TABr with added NaBr above 1 M. excellent agreement is observed between predicted and experimental n w . [47][48][49][50][51][52] . Model inputs based on experimental conditions: 25-45°C, and total solution concentration of surfactant set at 10-100 mM depending on specific surfactant.…”