Worm-like micelles entangle and form networks like polymeric fluids. In the present study surfactant solutions system of CTAB/NaSal were used to examine the flow property and the flow-induced-structure of micellar network in pressure-driven flows through a slit channel. Flow property apparently exhibited the dependence on shear rate: Newtonian region, shear-thinning, shear-thickening, and shear rate jump. To investigate the micellar network structure flow birefringence and small angle light scattering were carried out. Birefringence became measurable at the beginning of shear-thinning region, and the absolute value of birefringence increased with increasing shear stress. Moreover, white turbidity caused by the change of the micellar network structure appeared before the shear-thickening region. In SALS measurement, the streak indicating that the alignment of micellar aggregates in the flow direction was observed.
