The Influence of an Organic Salt on Micellization Behavior of Tetradecyltrimethylammonium Bromide in Aqueous Solutions of Trisubstituted Ionic Liquid [Odmim][Cl]

Abstract

The influence of sodium benzoate (Na‐Bz) on micellization behavior of the cationic surfactant tetradecyltrimethylammonium bromide (TTAB) in aqueous media of trisubstituted imidazolium‐based ionic liquid (IL), 1,2‐dimethyl‐3‐octylimidazolium chloride [odmim][Cl], was investigated using conductometry, tensiometry, fluorescence,1H NMR, Dynamic Light Scattering (DLS), and Rheology techniques. It was observed that with an increase in salt concentration, the critical micelle concentration (CMC) values of the system decrease. The CMC and various thermodynamic parameters like standard Gibbs free energy of micellization (), standard enthalpy change (), and standard entropy change () were calculated using conductometry and surface parameters such as surface pressure at the interface (Пcac), maximum surface excess concentration (Гmax), minimum surface area per molecule (Amin), and pC20 (adsorption efficiency) were calculated using the tensiometry technique. The aggregation number (Nagg) was calculated using fluorescence measurements. 1H NMR spectra shed light on interactions between the salt and the cationic surfactant in 0.1 wt% IL. DLS gives information about the size distribution of micelles in solution at different concentrations of salt.

Effect of amino acid on the surface adsorption and micellar properties of surface active ILs varying in cationic head groups

“…The two ILs [C 12 mim][Br], and [Mor 1,12 ][Br] have been observed to form spherical micelles in the range of 1–2 nm. However, both the ILs in water/amino acid solutions also produce larger aggregates at higher concentrations [ 83 , 84 ]. These two kinds of produced aggregates i.e.…”

Micelle formation of tetradecyltrimethylammonium X‐benzoate surfactants: Benzoate counterion substituent effects

“…The various substituted benzoate counterions generally lower the CMC values in comparison to the typical inorganic counterions of chloride or bromide for many cationic surfactants (Pal & Punia, 2020;Singh et al, 2019). Oda's cationic Gemini surfactant research on numerous inorganic and organic counterions addressed a number of different variables however ortho-substituted benzoates were not studied in detail (Manet et al, 2010).…”

Synthesis, Characterization, Antibacterial Activity, and Interfacial and Micellar Features of Novel Cationic Gemini Surfactants with Different Spacers

“…Two primary characters of surfactants are the talent to adsorb at interfaces and to form micelles (Azum et al, 2017). Petroleum, textile, paint, agrochemical, detergents, pesticides, cosmetics, herbicides, biotechnology, pharmaceuticals, food, nanotechnology, improved oil recovery, or surfactant‐based separation processes are some of the applications of surfactants used in the industry (Aiad et al, 2013; Gan et al, 2014; Gaudin et al, 2018; Mei et al, 2019; Wani et al, 2019;Wang et al, 2019; Pal and Punia, 2020).…”