Fabrication of Millicapsules from Slurry of Ingredient Particles and Monomer Liquid on a Superamphiphobic Surface

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  • Takei Takayuki
    Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
  • Takao Rio
    Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
  • Saito Takuya
    Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
  • Tajiri Nami
    Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
  • Yoshida Masahiro
    Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University

Bibliographic Information

Other Title
  • 撥液性表面を利用したスラリー状カプセル原料液からのミリカプセルの作製
  • ハツエキセイ ヒョウメン オ リヨウ シタ スラリージョウ カプセル ゲンリョウエキ カラ ノ ミリカプセル ノ サクセイ

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Abstract

<p>We previously developed a method to fabricate spherical millicasules on a superamphiphobic surface. The procedure includes formation of spherical droplets of a liquid with dissolved ingredients on the surface and solidification of the droplets. The purpose of this study was to fabricate spherical millicapsules from highly viscous slurry consisting of solid particles as the ingredient and a liquid monomer. The high viscosity inhibited formation of spherical droplets of the slurry on the surface. We added dichloromethane, which is highly volatile, a good solvent for the ingredient, and miscible with the monomer, to obtain a homogeneous solution. The solution formed spherical droplets on the surface, leading to successful fabrication of spherical millicapsules by polymerization of the monomer after evaporation of dichloromethane. We showed that the ingredient could be encapsulated with high efficiency. Further, the release rate of the ingredient could be controlled by coating the capsules with the polymer prepared by polymerization of the monomer.</p>

Journal

  • KAGAKU KOGAKU RONBUNSHU

    KAGAKU KOGAKU RONBUNSHU 46 (1), 8-12, 2020-01-20

    The Society of Chemical Engineers, Japan

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