Effects of Addition of Large Particles on Lamellar Microphase-Separated Structure of Block Copolymer

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  • TAMADA Kenta
    Department of Chemistry for Materials, Graduate School of Engineering, Mie University
  • TORIKAI Naoya
    Department of Chemistry for Materials, Graduate School of Engineering, Mie University
  • KAWAGUCHI Masami
    Department of Chemistry for Materials, Graduate School of Engineering, Mie University

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Other Title
  • サイズの大きな粒子の添加によるブロック共重合体のラメラ状ミクロ相分離構造への影響
  • サイズ ノ オオキナ リュウシ ノ テンカ ニ ヨル ブロック キョウ ジュウゴウタイ ノ ラメラジョウ ミクロソウ ブンリ コウゾウ エ ノ エイキョウ

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Abstract

<p>The influence of added divinylbenzene (DVB) cross-linked particles, having a diameter of 3 µm and 30 µm, on the lamellar microphase-separated structure of styrene-1,4-rich-isoprene (SI) diblock copolymer is investigated. The DVB particles readily sedimented in toluene solution of SI due to low dispersibility, therefore the particles were localized in the lower part of the solvent-cast films. The lamellar structure, formed in the process, exhibited preferential orientation along the direction parallel to the film surface, and the domain spacing along the perpendicular direction was lower than in the parallel direction. The degree of preferential lamellar orientation was lowered by adding the DVB particles, leading to an increment in the domain spacing. Furthermore, the DVB particles with larger diameter gave lower domain spacing, though they produced a lower degree of lamellar orientation.</p>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 76 (4), 335-340, 2019-07-25

    The Society of Polymer Science, Japan

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