Mixed Micellization Properties of Cationic Monomeric and Gemini Surfactants

Abstract

Table 1 Specific conductance of gemini (16-10-16) + (α CTAB + (1 -α) water), where α is bulk mole fraction, M is the molarity of gemini (16-10-16), and temperature T = 300 K. Concentration (mM)Specific Conductance (қ /µ S cm -1 ) α CTAB = 0.203

Imidazolium‐Based Ionic Liquid as Modulator of Physicochemical Properties of Cationic, Anionic, Nonionic, and Gemini Surfactants

“…Interfacial properties give information about solute–solute and solvent–solute interactions in surfactant solutions (Sinha et al, ). From the surface tension measurements, several interfacial parameters can be determined, such as the surface excess concentration (Г max ) and minimum area per molecule at the air–water interface ( A min ) (Sinha et al, ; Tikariha & Ghosh, ), using Eqs. and : where R is the ideal gas constant (8.314 J mol −1 K −1 ), T is the absolute temperature in kelvin, C is the surfactant concentration, (d ϒ /d log C ) is the slope of the surface tension versus log C plots below the CMC, and N is Avagadro's number (6.022 × 10 23 mol −1 ).The constant n (prefactor) for an ionic surfactant takes the value of 2, and for a nonionic the value of 1.…”

Solubility enhancement of anthracene and pyrene in the mixtures of a cleavable cationic gemini surfactant with conventional surfactants of different polarities

“…Because of the better performance of the mixed micelles than the single surfactant solutions, the gemini-conventional surfactant mixture, formed by an environment-friendly cleavable gemini surfactant, can be an appealing medium in view of the lesser toxicity caused by the used system [21,[24][25][26][27][28][29]. Although gemini surfactant has various applications by combining it with different conventional surfactants, solubilization is a recent development in this field.…”

Dendritic Architectures with Positively Charged Cores and Negatively Charged Shells

“…The critical micelle concentrations (cmc) of the new dipolar amphiphiles 17, 20, 23 and 25 were determined by conductivity measurements, which is a common method for surfactants. [28][29][30] For this purpose, concentrated aqueous solutions of the corresponding sodium carboxylates were diluted stepwise and the specific conductivities were measured. Plotting the dependence of the specific conductivities (κ) on the concentration (c) showed two different linear regions, which belong to monomers and aggregates, respectively.…”