127 CTAB/NaSal系界面活性剤水溶液の圧力駆動スリット内流れにおける流動誘起構造(S34-2 複雑流体の流れとその応用(2),S34 複雑流体の流れとその応用)  [in Japanese] 127 Flow-induced-structure in pressure-driven flows through a slit for surfactant solutions of CTAB/NaSal system  [in Japanese]

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.