Effects of ionic liquid on micellar aggregate formed by pluronic (F-127) and non-ionic surfactant (TX-100) in aqueous solution

Although ionic liquids have a great deal of application, a few of the most popular ones are in separations, battery electrolyte development, and electrocatalysis. The synergistic interaction between surface-active ionic liquid (1-hexadecyl-3-methylimidazolium chloride, SAIL) and pluronic (F-127)/non-ionic surfactant (TX-100) has been investigated at 298.15 K. The examined mixture's critical micelle concentration (cmc) values for various compositions are significantly lower than those of pure amphiphiles (due to the strong attractive interaction between components). In this study, the surface tension method was used to cal-culate the cmc values of single and mixed amphiphiles. The mole fractions of the components in the mixed micelle as well as the mixed monolayer and interaction parameter were specified by regular solu-tion theory (RST) using the data from experimental observations. Several thermodynamic parameters were also calculated for the mixed micellization of SAIL with F-127/TX-100. In the current mixed sys-tems, the data obtained show that the AGM and AGMIdeal are negative while ASM is positive, implying a spontaneous process of micellization. Using Maeda's theory, it was found that the stability of mixed micelles in these systems depended profoundly on chain-chain interactions. UV-visible spectroscopy fur-ther supports the positive interaction between SAIL and nonionic surfactants. The SAIL absorption spectra demonstrate an increase in absorption with increasing surfactant concentrations without any shift, sup-porting the creation of a new complex. The F-127+SAIL mixture has a higher binding constant value, indi-cating that SAIL interacts with pluronic more effectively.(c) 2023 Elsevier B.V. All rights reserved.