[16p-Z13-1~12] 1.1 Interdisciplinary and General Physics

[16p-Z13-10] Analyzing structure of colloidal silica solution under shear stress

〇Keishi Akada¹, Soichiro Okubo², Kazuya Tokuda², Koji Yamaguchi², Takamasa Onoki², Tatsuya Yamada³, Hiroshi Ushiyama³, Syogo Tejima³, Jun-ichi Fujita¹ (1.Univ. of Tsukuba, 2.Sumitomo Electric Industries, Ltd, 3.Research Organization for Information Science & Technology)

Keywords:Non-Newtonian fluid, Small-angle X-ray scattering

In some colloidal solution, applying shear stress increases (dilatant) or decreases (thixotropy) viscosity. However, it has been difficult to measure the dynamics of structural change, because the structure returns to the original state when the shear stress disappears. In this study, a solution viscosity and small-angle X-ray scattering (SAXS) were simultaneously measured using an X-ray transmission solution cell. An aggregation of colloidal particle was observed by real-time observation of the structural change of colloidal particle cluster.