Rheology of Silica Suspensions in the Presence of Surfactants

DOI
  • Asai Hayato
    Mie University, Graduate School of Engineering, Division of Chemistry for Materials
  • Kawaguchi Masami
    Mie University, Graduate School of Engineering, Division of Chemistry for Materials

Bibliographic Information

Other Title
  • 界面活性剤存在下によるシリカサスペンションのレオロジー

Description

In this study, we present changes in rheological behavior of silica suspensions dispersed in aqueous KOH solutions by addition of cationic surfactants in terms of adsorption properties of the surfactants, phase diagrams, and light scattering measurements under shear flow. The silica suspensions were classified into three regions of sol, gel, and liquid-solid two separated phases and the resulting sol and gel have been mainly conducted by rheological measurements. Hysteresis loops of the sols strongly depend on the alkyl chain length containing in the surfactants: the shape of the hysteresis loop of the silica suspensions in the presence of the surfactant with the short alkyl chain is negative, whereas in the presence of the surfactant with the long alkyl chain the positive hysteresis loop was obtained. The Fractal analysis suggests that gelation mechanism of the silica suspensions depends on the alkyl chain length of the surfactant. Moreover, such dependences are well correlated with the adsorption characteristics of the surfactants and the light scattering measurements under shear flow.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001205592460160
  • NII Article ID
    130004604135
  • DOI
    10.11345/japannctam.57.0.67.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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