The influence of inorganic salts on the rheological properties of 1,3-propanediyl bis(dodecyl dimethylammonium bromide) and sodium dodecylsulfonate aqueous mixed system.

Highlights: [•] Surfactant molecular structure strongly affects rheological properties of systems. [•] Mixed system of gemini 12-3-12 and sodium dodecylsulfonate has low viscosity peaks. [•] Rodlike micelle-to-vesicle transition leads to low viscosity peaks of mixed system. [•] Salt effect depends on matching water affinities between counterions and head groups. [ABSTRACT FROM AUTHOR]