Micellization and Interfacial Interaction Behaviors of Gemini Cationic Surfactants–CTAB Mixed Surfactant Systems

Abstract

The interfacial and micellization behaviors of binary mixtures of two gemini cationic surfactants and conventional the cetyl trimethyl ammonium bromide surfactant were studied at various molar ratios. From the equilibrium surface tension measurements, the critical micelle concentrations (CMC) data were obtained as functions of the composition. Values of the CMC were analyzed according to the regular solution model developed by Rubingh for mixed micelles. Two interaction parameters were obtained for each system, the interaction at the interface, and in the micellar phase. The results showed that micellization and adsorption properties of the studied mixed systems depend on the spacer chain lengths of the gemini surfactants and their ratio in the mixed systems.

Stable poly(St-co-BA) nanoemulsion polymerization for high performance antibacterial coatings in the presence of dioctyldimethylammonium chloride

“…All β M b 0 with a different α value, indicating that synergism exists resulting in the formation of mixed micelles between D821 and CTAB. In addition, all |β M | b 3 indicate that the synergism is weak due to both D821 and CTAB being positively charged quaternary ammonium ions and exhibit a repulsive interaction between cationic groups [31][32][33]. However, CTAB with a positively charged can provide additional antibacterial activity and is an appropriate synergistic additive to D821.…”

“…Both D821 and CTAB are positively charged quaternary ammonium ions with repulsive interactions between the cationic groups, which are not beneficial for synergetic emulsification [42]. However, some studies have reported that CTAB can effectively form synergetic mixed surfactant systems with cationic surfactants [31,32]. In addition, a systematic investigation of the composition of the D821-CTAB mixed surfactants in the St/BA emulsion polymerization, and the results are shown in Table 2.…”

“…A direct method for solving the relatively poor emulsifying ability of D821 involves adding a synergistic emulsifier. As a conventional surfactant, cetyltrimethyl ammonium bromide (CTAB, CAS: 57-09-0) has been widely used in CTABnonionic, CTAB-anionic and CTAB-cationic mixed surfactant systems [29][30][31][32]. An effective approach for improving the performance of latex films involves adding a functional monomer to the polymerization [33,34].…”

Investigation of Mixing Behavior of both a Conventional Surfactant and Different Inorganic Salts with a Cationic Gemini Surfactant in Aqueous Solution

“…If CMC exp is equal to the CMC ideal , the system has no interaction and the mixing of the components is ideal. The ideality indicates that there is no interaction between the different components in the mixed system (Mohamed et al, ).…”

Comparison Between Phase Behavior of Gemini Imidazoliums and Monomeric Ionic Liquid Surfactants in W/O Microemulsion Systems

“…These interactions are greatest when there are similarities in the structures of their hydrocarbon chains. [38,39] Synergistic effect was observed in binary systems of cationic gemini and conventional surfactants in the micelle. Greater synergistic interaction in the micelles has been found to reduce the solubilizing capacity toward polyaromatic hydrocarbons (PAHs).…”