Flocculated Structure and Flow Properties of Suspensions of Brilliant Carmine 6B in Polybutadiene.

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  • MORITA Kotaro
    Graduate School of Science and Technology, Chiba University SAKATA INX Corp.
  • WEI Xianfu
    Graduate School of Science and Technology, Chiba University Map Printing, Department of Cartography, Zhengzhou Institute of Surveying and Mapping.
  • AMARI Takeshi
    Graduate School of Science and Technology, Chiba University

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  • Flocculated Structure and Flow Properti

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Abstract

The flocculated structure and flow properties of suspensions of brilliant carmine 6B (C6B) in polybutadiene were investigated. In this study, we have used simple suspensions of C6B in polybutadiene having different viscosity. Stress overshoot phenomenon after various rest periods and double-step shearing test were examined for the suspensions. In the double-step shearing test, a transient stress overshoot was observed in the suspension of C6B in lower viscosity disperse medium, when the shearing was switched suddenly from higher to lower. This peculiar phenomenon was discussed in comparison with the other kinds of suspensions and was explained from the view point of the alteration of dispersing state and formation of flocculated network structure of C6B.

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