Influences of alcohol and diol on the aggregation behaviour, modes of interaction and the thermodynamic properties of the mixture of bromocresol green dye and sodium dodecyl sulphate at numerous temperatures

Solubilization and release of fragrance agents in the aqueous solution of CO2 switchable surfactants

“…The results shown in Figure 3 are consistent with the studies which indicated that n-pentanol does not influence the morphology but enhances the number of aggregates, however, n-hexanol supports the self-assembly of larger molecular aggregates (Nagarajan, 2002;Schmutzler et al, 2018). Moreover, it was reported that the CMC of the surfactant solution decreased up to a certain value, and then started rising with an increase in alkanols concentration (Islam et al, 2021). Therefore, at a higher alkanol concentration, the surfactant molecules are more likely to disperse rather than be closely packed together in the solution, consequently, the particle size of the solution will be enlarged.…”

Effect of Isopropanol Mixed Solvent on Interaction of Cetyltrimethylammonium Bromide with Bromocresol Green: A Conductometric Study

“…1 also shows the variation in specific conductance of aqueous solution of CTAB with its increasing concentration in 10% v/v isopropanol. It was observed that specific conductance of CTAB decreases in the presence of isopropanol, which was reported by several researchers [3][4][5][6][7][8] as the effect of lessening of dielectric constant of the mixed solvent medium compared to that of pure water. Therefore, the slope of both pre-CMC and post-CMC lines of CTAB, in mixed solvent of isopropanol in water was observed to be less than that found in pure water.…”

“…As a result of strong binding between the ionic head groups and counter ions, total surface charge of micelle decreases. Due to this lessening of the total surface charge in micelle and because of the lower mobility of large micelles, overall reduction in conductance is observed [3][4][5][6][7][8].…”

“…Removal of dye from wastewater requires well understanding of the dye-surfactant interactions and are typically discussed under the three condi-tions of the solubilities of the surfactant in water i.e. (i) at low concentration of surfactant, when surfactants are adsorbed preferentially at the interface of the air-water (pre-micellar region), (ii) at critical micelle concentration (CMC), when surfactants begin to form micelle and (iii) after CMC (post-micellar region) [3][4][5][6]. Solubility of dye molecules in surfactants also depends on the features of the dye molecule itself.…”

“…Therefore, a thorough understanding of the dye-surfactant interactions employing BCG-surfactant complexes in aqueous medium and with cosolvent alcohol are in trend in current research. Recently, Islam et al [3,4], on the influence of alcohols and diols in the modes of interaction of the mixture of anionic dye BCG and anionic surfactant sodium dodecyl sulphate (SDS) by conductometric study, revealed that the presence of BCG and alcohols have a profound effect on the micellization process of the SDS. Presence of BCG lowers the CMC value of SDS indicating micellization process is favourable in the BCG and SDS combined system.…”