Adsorption dynamics of binary mixture of Gemini surfactant and opposite-charged conventional surfactant in aqueous solution

Adsorption and aggregation of 2-hydroxyl-propanediyl-α,ω-bis(dimethyldodecyl ammonium bromide) in aqueous solution: Effect of intermolecular hydrogen-bonding

“…So far, the various gemini surfactants containing different spacers, for example, a flexible hydrophilic [2][3][4][5], flexible hydrophobic [6,7], or rigid hydrophobic [8][9][10][11], have been investigated. Among a class of cationic gemini surfactants containing hydroxyl substituted spacer interests us [12][13][14][15][16][17][18].…”

Adsorption and Aggregation Behaviors of Oleyl Alcohol-Based Extended Surfactant and Its Mixtures

“…Rong’s group analyzed the dynamic surface tension data for the C 9 pPHCNa/C 10 TABr system using the revised Ward and Tordai equations, and it was shown that the composition of binary surfactants in the bulk solution is an important factor affecting the adsorption kinetics of mixed systems. At α 1 = 0.33, the minimum electrostatic repulsion between the adsorbed and adsorbing molecules occurs and thus the lowest adsorption barrier and the maximum Da among all the mixed systems [ 32 ]. In the case of OE 3 P 3 S/ATAB = 6:4, the OE 3 P 3 S/ATAB system has the largest D l value, indicating that it possesses the lowest adsorption barrier.…”

Surfactant mixtures: A short review

“…As with any process that involves diffusion, equilibrium is in principle never reached, but at most common concentrations effective equilibrium occurs for single surfactant systems on the order of tens to hundreds of seconds, although in some cases very near the CMC a meso‐equilibrium region can be seen even in presumably single surfactant systems. At low concentrations and short times, the Ward‐Tordai approach seems to work well for mixtures as it does for single component systems (Goswami et al, 2014; Jiang et al, 2006). As expected, an increase in diffusion coefficient relative to the ideal case is shown because the smaller surfactant will diffuse faster as shown in Figure 4.…”