“Analysing the Energetics of Phase Separation in Non-Ionic Surfactant Brij-30: Investigating the Influence of Head Group Gathering”.

The main motto of this paper was to study how the hydrophilic surfactant head groupgathering affects the phase behavior of a 22% alcoholic solution of a non-ionic surfactant,Polyoxyethylene (4) lauryl ether (Brij-30) and hydroxyl amine mixtures at different concentrations.Our conclusions show that the hydrophilic part of the surfactant suppresses the system'spropensity to undergo phase separation, an increased sensitivity due to the presence of hydroxylamines. The CP decreases with an increasing concentration of mono, di, and Triethanolamine in a22% alcoholic solution of Brij 30 surfactant. CP increases with concentration in methylethanolamine while decreases in diethanolamine with concentration the same trend is observed inthe case of methyl diethanolamine and triethanolamine. Generally, ethanolic groups exhibit anincrease in Cloud Point (CP) with increased alkyl branching. The amines in ethanolamine showvariation in CP by integrating into the head region with proton-rich amine groups at the micelleinterface. By utilizing the traditional thermodynamic model for phase separation, we assessed thevarious corresponding energy parameters.Amongst all instances, we found that all the parameters fluctuated based on non-ionicsurfactant type, its micellar concentration, and the involvement of hydroxyl amine in the aqueousmedium. All the experimental findings are consistent because phase separation occurs due todecreased hydration of the surfactant head group induced by elevated temperature.