0503 CTAB/NaSal水溶液におけるせん断誘起構造の機械的・光学的特性の評価(OS5-1 非ニュートン流体の流動現象,オーガナイズドセッション)

概要

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Rheo-optic behavior of the shear -induced structure change of wormlike micelles solution on start-up shear flow 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 viscoelasticity and also causes flow-induced structure change by shear. Shear stress and flow birefringence were measured using concentric cylinder flow cell and microscopic observation by high-speed CCD camera was carried out on parallel plate flow cell. The micelles were oriented to the flow direction quickly as seen on birefringence behavior, but the viscosity increase that was related to the SIS occurred slower than the micelles orientation. The strip structure was observed at the time region when the SIS occurred.
2009-11-06