Effect of Sodium Salicylate on the Properties of Gemini Surfactant Solutions

Abstract

AbstractIn this paper, the effect of sodium salicylate on the solution properties of a gemini surfactant, butylidene‐α, ω‐bis (cetyl dimethyl ammonium bromide), was investigated through absorbance and dynamic light scattering (DLS) measurement, transmission electron microscope (TEM) observation, and rheology measurement. The DLS experiment showed that the average size of aggregates increases with the addition of sodium salicylate. The TEM experiment showed that the addition of sodium salicylate causes the change of the size and shape of aggregate. With the increase of the concentration of sodium salicylate, the viscosity of the gemini surfactant solution reaches a maximum value and the flow pattern of the gemini surfactant solution also undergoes a great change with a transition from a Newtonian fluid to a non‐Newtonian fluid.