Interaction between Partially-Sulfonic Polystyrene and Magnetic Particles-Packing and Orientation Behavior of Particles in Magnetic Coatings

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  • SUMIYA Kenji
    Department of Industrial Chemistry, Faculty of Engineering, Kobe University Technical Research Department, Hitachi Maxell, Ltd.
  • HIRAYAMA Naoto
    Department of Industrial Chemistry, Faculty of Engineering, Kobe University
  • TAII Toshiaki
    Technical Research Department, Hitachi Maxell, Ltd.
  • NAKAMAE Katsuhiko
    Department of Industrial Chemistry, Faculty of Engineering, Kobe University
  • MATSUMOTO Tsunetaka
    Department of Industrial Chemistry, Faculty of Engineering, Kobe University

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Other Title
  • 部分スルホン化ポリスチレン‐磁性粒子間相互作用と磁性塗膜中における粒子の分散・充てん・配向挙動
  • ブブン スルホンカ ポリスチレン ジセイ リュウシカン ソウゴ サヨウ ト ジ

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Description

The dispersion of γ-Fe2O3 particles and the adsorption of polystyrene (PS) or partially-sulfonic polystyrene (PS-S) on the particles were investigated. The following results were obtained. The γ-Fe2O3 particles did not interact with PS and did not disperse in a benzene solution of the PS. The saturation adsorption of PS-S on γ-Fe2O3 particles and the dispersibility of γ-Fe2O3 in paints and coatings increased, as a content of sulfonic styrene segments in PS-S increased up to 1.0 mol%. Above 1.0 mol% content of sulfonic styrene segments, however, the saturation adsolption of PS-S showed constant value and the dispersibility of γ-e2O3 particles decreased with increase in sulfonic content. These results could be explained by the conformation of the adsorbed PS or PS-S at the solid/liquid and liquid/liquid interface.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 41 (5), 273-278, 1984

    The Society of Polymer Science, Japan

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