Aggregation behavior of cetyldimethylethylammonium bromide under the influence of bovine serum albumin in aqueous/electrolyte solutions at various temperatures and compositions: conductivity and molecular dynamics study

Abstract

Herein, we have investigated the interaction of bovine serum albumin with a cetyldimethylethylammonium bromide, via a conductivity and molecular dynamics methods in the absence/presence of electrolyte solutions.

Study on the association and phase separation behavior of surfactants and promethazine hydrochloride: impact of ammonium electrolytes

“…The Δ H 0 m and Δ S 0 m values demonstrate that the micellization TTAB + PMH happens through the major contributing forces of exothermic (ion–dipole and dipole–dipole natures) along with hydrophobic interactions. 71,72 The extent of hydrophobic interaction is significantly larger in the H 2 O + NH 4 Cl medium, while the remarkable contribution of exothermic (ion–dipole along with dipole–dipole types) forces exists among components in aq. NH 4 NO 3 and (NH 4 ) 2 SO 4 media.…”

Association behavior and physico-chemical parameters of a cetylpyridinium bromide and levofloxacin hemihydrate mixture in aqueous and additive media

“…Therefore, we have calculated the micelle ionization using the slope ratio between above and below the straight lines of the CMC. The α 1 and α 2 can be premeditated from the ratios of S 2 / S 1 and S 3 / S 2 , 57,58 respectively, if S 1 and S 2 are the corresponding slopes above and below CMC 1 , while S 3 is the slope above CMC 2 . By deducting the value of α from one, we can calculate the fraction of counter ion binding, β 1, and β 2 , i.e.…”

Physicochemical parameters and modes of interaction associated with the micelle formation of a mixture of tetradecyltrimethylammonium bromide and cefixime trihydrate: effects of hydrotropes and temperature

“…, α = S 2 / S 1, where S 1 and S 2 are the corresponding slopes of the pre-micellar and the post-micellar straight lines, respectively. 52 The repulsive forces (electrostatic) among the surfactant head groups increase the magnitude of α , requiring a larger amphiphilic concentration for micellization to occur. Surfactant is employed as a catalyst, because adding it to the reaction medium enhances its surface area.…”

“…A digital conductivity meter (Jenway 4510, UK) having ±0.5% precision was used to determine the specic conductivity (k) of the experimental mixture in the applied solvents by following the procedures outlined in the literature. [52][53][54][55][56] The KCl (0.01 M) solution was employed for calibrating the conductivity meter. In this study, at rst, TTAB solutions (50 mmol kg −1 ) were made in a mixture of CMT, HT, and water, with the concentrations of CMT being held constant and HT concentration varied in a specic range to investigate the concentration effect on the micellization.…”

“…To assess the a for the creation of micelle of TTAB + CMT system, the ratios of the slope of the pre-micellar straight-line to the slope of the post-micellar straight-line are employed, i.e., the values of a is estimated by the S 2 /S 1 ratio, i.e., a = S 2 /S 1, where S 1 and S 2 are the corresponding slopes of the pre-micellar and the post-micellar straight lines, respectively. 52 The repulsive forces (electrostatic) among the surfactant head groups increase the magnitude of a, requiring a larger amphiphilic concentration for micellization to occur. Surfactant is employed as a catalyst, because adding it to the reaction medium enhances its surface area.…”