Precise Preparation and Characterization of Ladder-Like Vinylpolymers by Intramolecular ATRP Compartmentalized in a Nano-Sized Test Tube

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  • OBARA Noriyoshi
    Graduate School of Organic Materials Science
  • SHINOZAKI Yuki
    Graduate School of Organic Materials Science
  • YAMAGUCHI Toshio
    Graduate School of Science and Engineering, Yamagata University
  • WANG Zhoulu
    Graduate School of Organic Materials Science Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University
  • KIKUCHI Moriya
    Faculty of Engineering, Yamagata University
  • NARUMI Atsushi
    Graduate School of Organic Materials Science
  • KAWAGUCHI Seigou
    Graduate School of Organic Materials Science

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Other Title
  • ナノ試験管中での分子内ATRPによるラダー状ビニルポリマーの精密合成と特性解析
  • ナノ シケンカン チュウ デ ノ ブンシ ナイ ATRP ニ ヨル ラダージョウ ビニルポリマー ノ セイミツ ゴウセイ ト トクセイ カイセキ

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Abstract

<p>A multi-vinyl polymer (MOI-EO-26) which has many pendant methacrylate groups on a rigid helical isocyanate backbone and an ATRP initiation functional group at the α-end was compartmentalized in a 100 nm3 volume nano-test tube. The nano-test tube was prepared by an inversed nano-emulsion consisting of 2,2,2-trifluoroethanol as the dispersed phase, heptane as the continuous phase, and 3-[dimethyl(octadecyl)ammonio]propane-1-sulfonate as the surfactant. The ladder polymer having a narrow polydispersity and a high double bond consumption rate has successfully been prepared by the intramolecular ATRP of MOI-EO-26 in the nano-test tube. The small angle X-ray scattering (SAXS) profile from MOI-EO-26 in a tetrahydrofuran can be perfectly described by the cylinder model with a length of 5.39 nm and a diameter of 0.96 nm. The SAXS profile of the nano-test tube containing MOI-EO-26 at 55°C was also described by a cylinder with a length of 17.6 nm and a diameter of 2.8 nm and/or an ellipsoid with a long axis of 11.4 nm and a short axis of 1.45 nm. Intramolecular ATRP of MOI-EO-26 compartmentalized in the nano-test tube was carried out at 55°C to afford the well-defined ladder polymer with 61% double bond consumption rate at 100% recovery.</p>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 76 (2), 168-178, 2019-03-25

    The Society of Polymer Science, Japan

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