Special Structure of the Polymers Prepared from Polymerizations of Cyclic Disulfide and the Function of the Polymers

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  • ENDO Kiyoshi
    Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University

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Other Title
  • 環状ジスルフィドの重合から得られる特殊構造高分子とその機能
  • カンジョウ ジスルフィド ノ ジュウゴウ カラ エラレル トクシュ コウゾウ コウブンシ ト ソノ キノウ

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Description

In this article, initiator-free polymerizations of cyclic disulfides are described. Cyclic disulfides such as 1,2-dithiane (DT) and 1,4-dihydro-2,3-benzodithine (XDS), and lipoic acid (LPA) can be polymerized easily at their melting temperatures to give high molecular weight polymers that were characterized by GPC. From the analysis of NMR and ESI-MS spectra, the polymers obtained from the polymerization of cyclic disulfides were found to have a cyclic structure. Moreover, thermal and mechanical properties, and the decomposition behaviors of the polymers demonstrate that polycatenane structures are present. From polymerization of cyclic disulfides in the presence of cyclic poly(ethylene oxide) and crown ether, a polycatenane consisting of two different cyclic polymer was obtained. The polymers showed a shape-memory effect. Furthermore, a gel was obtained by the polymerization of bifunctional monomers.<br>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 68 (12), 773-781, 2011

    The Society of Polymer Science, Japan

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