Effect of ionic strength on the rheological behavior of aqueous cetyltrimethylammonium p-toluene sulfonate solutions

Shear rheology and porous media flow of wormlike micelle solutions formed by mixtures of surfactants of opposite charge

“…2 upon addition of SDS. An increase in critical shear rate for shear thickening with electrolyte concentration has been reported for NaCl/CTAT solutions [30,31]. However, the increase becomes noticeable at NaCl concentrations that are appreciably higher than the SDS concentrations reported in Fig.…”

“…The flow of CTAT solutions through porous media has been studied in a previous work [30]. The results revealed that dilute CTAT solutions, at concentrations above the CRC, exhibit a Newtonian behavior at low shear rates, followed by sizeable increases of the resistance coefficient.…”

Biopolymer Surfactant Interactions

“…The effect of adding a hydrophilic counterion, NaCl to aqueous CTAT solution was measured by dynamic light scattering. The obtained results indicate that the micelles grow rapidly upon salt addition and eventually achieve a constant size under static conditions [12]. The results were explained in terms of a competition between micellar growth induced by salt addition and changes in micellar flexibility caused by ionic screening effects.…”

1-Hexanol triggered structural characterization of the worm-like micelle to vesicle transitions in cetyltrimethylammonium tosylate solutions

“…The rheological properties of aqueous CTAT solutions can be inuenced by the presence of anionic surfactant, 5,15 salts, [23][24][25] polymers 12,26-28 and by temperature. 25,29 Koehler et al 5 studied the effect of sodium dodecylbenzene sulfonate (SDBS) on CTAT solution and observed growth of worm-like micelles, though at higher concentrations strong mutual interactions between the oppositely charged surfactants facilitated a transition from linear micelles to branched micellar network of low viscosity.…”