Effect of temperature on shear viscosity of concentrated solutions of hydroxypropyl cellulose.

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  • SUTO Shinichi
    Department of Polymer Chemistry, Faculty of Engineering, Yamagata University
  • OBARA Kazuhiro
    Department of Polymer Chemistry, Faculty of Engineering, Yamagata University
  • KARASAWA Mikio
    Department of Polymer Chemistry, Faculty of Engineering, Yamagata University

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Other Title
  • ヒドロキシプロピルセルロース濃厚溶液のせん断粘度に対する温度の影響
  • ヒドロキシプロピル セルロース ノウコウ ヨウエキ ノ センダン ネンド ニ

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Description

Shear viscosities for three kinds of hydroxypropyl cellulose (HPC) solutions were determined as a function of temperature over the wide range of polymer concentration, covering liquid crystalline, biphasic, and isotropic regions. A cone-plate type viscometer was used. The viscosity-temperature curves for dimethylformamide, distilled water, and acetic acid solutions of HPC displayed a minimum and a maximum. The maximum and minimum values of viscosity decreased with increasing polymer concentration, with a few exceptions. The viscosity of a single phase (isotropic or anisotropic) solution at a given temperature increased with increasing polymer concentration. The concentration-temperature superposition for the viscosity was successfully applied to all the systems in this study.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 43 (4), 231-235, 1986

    The Society of Polymer Science, Japan

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