A novel viscoelastic system from a cationic surfactant and a hydrophobic counterion

On the shear thickening behavior of micellar aqueous solutions of cetyltrimethylammonium fluorobenzoates: Effect of the fluor position

“…In fact, the aggregate growth is influenced by the localization and orientation of the substituent in aromatic counterions [17][18][19]21]. Furthermore, changes in surfactant concentration [18,19], headgroup area [11,21], charge density [17] and/or electrostatic interactions among the headgroups [4,[21][22][23][24] also affect micelle morphology. Moreover, Berlot et al [25] reported that there is a specificity following the Hofmeister series for various monovalent counterions.…”

Effects of dioctadecyl dimethyl ammonium chloride on the rheological behavior of behenyl trimethyl ammonium chloride/1-hexadecanol/water ternary system

“…The viscoelastic functions of the system without DODAC have a plateau at very low frequencies and are regarded as independent of frequency. This may be typical rheology for lamella liquid crystals [5,15,26]. The rheological data clearly indicate that the C 22 TAC-α gel show no mechanical relaxation in the time scale observed.…”

“…In surfactant solutions, various types of molecular assemblies including spherical vesicles, multilamellar vesicles, threadlike micelles, and lamella liquid crystals have been reported by many authors [12][13][14][15]. In ordinary formulation of surfactant/long-chain alcohol/water ternary system, the lamella liquid crystals with very high viscosity [8,16] are formed at low temperatures and the closed lamella structures called vesicles with low viscosity at high temperatures.…”

Phase equilibria of mixtures of surfactants and viscoelastic properties of the liquid crystal phases

“…Representative POM textures from C 12 E 10 /water system for hexagonal phase at 60% C 12 E 10. [8,12,25,26]. The mechanical moduli for the mixture of C 12 E 4 with the more hydrophilic surfactant (S40P) can be seen in Fig.…”