Rheo-optic behavior of wormlike micelles under a shear-induced structure formational condition - Verification of stress-optic rule by full component measurement of refractive index tensor
Rheo-optic behavior of wormlike micelles under a shear-induced structure formational condition - Verification of stress-optic rule by full component measurement of refractive index tensor
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剪切诱导结构形成条件下蠕虫状胶束的流变光学行为 - 通过折射率张量的全分量测量验证应力光学规则
DOI：
10.1678/rheology.30.109
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. Shirakashi
中科院分区：
文献类型：
--
作者：
Tsutomu Takahashi;Hironori Sugata;M. Shirakashi
阳离子表面活性剂的水溶液，CTAB/NaSal，形成蠕虫状胶束，并显示粘弹性。它还显示了剪切速率高于4 s-1的剪切引起的结构变化。采用双光束流变光学分析仪测量了阶跃剪切流动下折射率张量的全分量，并测量了剪切应力和第一法向应力差。当剪切速率小于6 s-1时，折射率张量的各分量与应力张量的相应分量成正比。然而，应力光学系数C在4 s-1以上突然减小。在4至6 s-1之间的剪切速率下，应力-光学规则成立，但胶束结构可能会改变。
An aqueous cationic surfactant solution, CTAB/NaSal, forms wormlike micelles and shows viscoelastic properties. It also shows shear-induced structure change at shear rates higher than 4 s-1. Full components of the refractive index tensor under step shear flow were measured by using double-beam rheo-optical analyzer in addition of shear stress and first normal stress difference measurement. Each component of the refractive index tensor is proportional to the corresponding component of the stress tensor when shear rate is lower than 6 s-1. However, a stress-optical coefficient, C, suddenly decreases above 4 s-1. At shear rates between 4 to 6 s-1, the stress-optic rule holds, but micellar structure might change.