S0501-1-3 紐状ミセル水溶液のせん断流れにおける速度分布と流動誘起構造(複雑流体の流動現象(1))

概要

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In wormlike micelle solutions with hydrophobic salt (CTABINaSaI), micelles tangle each other and the solutions show remarkable viscoelasticity. Its flow property complexly changes with flow conditions because the network of wormlike micelle is affected by the flow. In our research, we analyzed the gapwise velocity profile of the sample in shear flow to clarify their flow properties. We also measured temporal velocity change and flow birefringence to analyze the relation between the velocity profile and the orientation of micelle. The velocity profile had two or three infection points around which the velocity gradient rapidly changed, that is shear-banding. In the end of shear-thinning regime in a flow curve, temporal changes in both velocity and birefringence have nearly equal periodical time. The experimental results show that they are strongly connected.
一般社団法人日本機械学会の論文
2009-09-12