Micellization of Cationic Surfactant Cetyltrimethylammonium Bromide in Mixed Water-Alcohol Media

Behavior of hexadecyltrimethylammonium bromide and Triton X-100 mixture in the bulk phase of aqueous solution in the presence of methanol and propanol

“…S14,S15). This initial decrease is in accordance with many authors [2][3][4][5][6], for example Shirahama and Kashiwabara [2] but contrary to Nazir et al [35] and others [11,12], based on single-surfactant solutions. It results probably from the adsorption of propanol in the palisade layer of the micelles and reduction of unfavorable repulsive interactions between surfactant hydrophilic heads.…”

Surfactant-assisted mild solvothermal synthesis of nanostructured LiFePO4/C cathodes evidencing ultrafast rate capability

“…It means that the solubility of the surfactant into the system is increased by the presence of alcohol into the solution and, hence, the micellization process is delayed. In addition to breaking down the structure of water, alcohols lower its dielectric constant, thereby contributing to increase the CMC [26]. This lowering of the dielectric constant of the system with an increased alcohol percentage would also decrease the tendency of the counterions to keep bound to the micellar surface and, hence, would contribute to decrease the degree of counterion binding (b) of the surfactant (i.e., CTAB).…”

“…This leads to the promotion of the micellization process (i.e., decrease of CMC) as well as to the increase of b, due to the screening of the electrostatic repulsions among the ionic head groups of the surfactant. In this respect, Nazir et al [26] stated that the CMC of CTAB reaches a maximum value, due to the penetration of alcohol molecules into the micelles. However, they did not consider the whole range of alcohol concentration.…”

“…Several studies were found in the literature, regarding the differences in the micellization of CTAB in the presence of co-solvents, particularly having alcoholic functionalities. They demonstrated that the effect of this addition is difficult to be unravelled, and not only depends on the amount of co-solvent added, but also on the number of carbon atoms in its aliphatic chain (chain length) [26][27][28][29][30]. Starting from the synthesis procedure reported in Meligrana et al [24], we here thoroughly investigate the use of different mixed alcohol/water solutions for the dissolution of CTAB, being the presence of a cosolvent expected to greatly influence the properties of the obtained powders.…”

Evaluation of reduction kinetics of 2,2-diphenyl-1-picrylhydrazyl radical by flavonoid glycoside Rutin in mixed solvent based micellar media

“…Because of this, less disruption of the solvent structure is necessary to accommodate the hydrocarbon chain of surfactant molecule making methanol-water a better solvent for surfactant molecules leading to delay in micellization process [33]. The variation of surface tension ( ) versus logarithm of surfactant concentration (log C t ) depicted in Fig.…”