抄録
Occurrence of the shear-induced structure change of wormlike micelles solution on restarted step shear flow with interval time was investigated. An aqueous solution of CTAB/NaSal was used as a test fluid and it is known that it exhibits one-mode Maxwell type viscoelastisity and also cause flow-induced structure change by shear. The step shear flow with certain shear rate is applied and suddenly stopped. With certain interval time, the second step flow with the same shear rate is applied. On the restarted flow, the shear stress is strongly affected by the interval time but the birefringence is not affected when SIS is caused. The orientation of the micelles is quickly recovered but the SIS needs large energy for restructuring.
