Abstract
Using rheological measurements, we investigated the wormlike micelles formed by anionic surfactants, sodium oleate (NaOA), and sodium erucate (NaOEr) in the presence of KCl and tetrabutyl ammonium bromide (TBAB). The viscosity of the NaOA solution increased with KCl concentration, but adding TBAB decreased viscosity. In contrast, the apparent viscosity of NaOEr-KCl solution enhances with increasing TBAB concentration. In addition, NaOEr is better than NaOA at encouraging the construction of viscoelastic wormlike micelles, needing less surfactant and a lower salt concentration. We prepared a wormlike micelle system with strong viscoelasticity by using NaOEr, cooperatively induced by KCl and TBAB. Based on these studies, we discussed the complex influence of TBA+ on constructing wormlike micelles.
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