Micelle formation of sodium alkylsulfate under high pressures

Thermodynamic Studies of Aqueous m–s–m Gemini Surfactant Systems

“…3) begin to increase with increasing s beyond s ∼ = 8, corresponding to approximately the same spacer length at which a decrease occurs in the head group area and the cmc with increasing spacer length. It has been shown previously (30) that the partial molar volume change due to micelle formation for a homologous series of n-alkyltrimethylammonium bromide surfactants behaves in a linear fashion according to…”

The Temperature Dependence of the Critical Micelle Concentrations of Foam-Forming Surfactants

“…Knowing that DH mic becomes more exothermic as the comparable to the ionics. The pure amphoteric systems cited in the literature indicate values for enthalpy and entropy of temperature rises, less energy is required to break up the three-dimensional water structures in water than in a salt micellization comparable to the ionics (18,21), although small negative enthalpies have been reported (25). Varion solution at any temperature above the CMC minimum (40,57,58).…”

“…A ruby sphere of exactly known diameter was used for calibration. The temperatures studied were 25 surfactant mixture (anionic with a cationic surfactant) in tween that of its components, until below 10ЊC, where it aqueous solution has also previously been found to be lower decreased as in the softer brine. This is an example of how than the CMCs of each individual surfactant (47).…”

“…These included a carboxyl-betaine, a ture, and is unique to each surfactant system. (4,(22)(23)(24)(25)(26). The CMC increases with to decrease to a minimum with increasing temperature and then pressure to some maximum value and then decreases.…”

Phase equilibriums, self-assembly and interactions in two-, three- and four medium-chain length component systems

“…The linear dependence of lncmx (or cmc, cmm) on the number of methylene groups in hydrocarbon chain has been confirmed for a large number of surfactants. Constant a, is a function of charge interactions on the surface of micelles [83,86,87]. Constant b characterizes the nature of hydrophobic interaction.…”