Chain length mismatch and packing effects on the thermotropic phase behavior of salt-free catanionic surfactants

Thermotropic mesomorphism in catanionic surfactants synthesized from quaternary ammonium surfactants and sodium dodecylbenzenesulfonate: Effect of chain length and symmetry

“…However, the observed transition temperatures, enthalpy, and entropy are influenced by chain length, symmetry, and the number of alkyl groups. These results are in agreement with other literature findings [11][12][13]35]. The thermal stability on the other hand is influenced by the nature of the headgroup [24].…”

Elucidating the effect of additives on the alkyl chain packing of a double tail cationic surfactant

“…phase. Vesicle solutions are commonly observed for mixed cationic-anionic surfactant systems but only for dilute solutions [50,51]. The present systems appear to be too concentrated to allow for vesicles.…”

Interfacial modulus and surfactant coated surfaces

“…This discrepancy may arise from the different way the two surfactants are adsorbed on the mica. CTAB, can easily adsorb onto mica surface through electrostatic interactions [33,34] to form a layer similar to the one illustrated in figure 3(a). CaS, on the other hand, is an anionic surfactant, which means the adsorption of CaS on mica surface is likely to occur through the bridging mechanism [35,36] of calcium ion binding and this results in an interdigitated layer rather than a perfect monolayer.…”