The growth and structure of anionic micelles of sodium dodecyl trioxyethylene sulfate (SDES) in the presence of electrolyte KBr have investigated by means of the rheological methods. It is fully proved that wormlike micelle and network structure can be formed in SDES/KBr aqueous micellar solutions, according to the measurements of the relation of steady shear viscosity η and stress σ, and the parameters of zero-shear viscosity η0, complex viscosity | η^*|, dynamic moduli (storage modulus G' and loss modulus G") etc. , and the application of Cox-Merz rule and Cole-Cole plot. The plateau modulus G0 and the relaxation time τare also used to express the rheological properties of the wormlike micellar solution. The structure is a character of non-linear viscoelastic fluid and departure from the simple Maxwell model.

Key words: RHEOLOGICAL PROPERTY, VISCOELASTICITY, MICELLE