Block Copolymerization. II. Polymerization of Tetrahydrofuran by Bifunctional Cationic Initiator

DOI 1 Citations 16 References Open Access
  • Yamashita Yuya
    Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University
  • Hirota Masahiro
    Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University
  • Matsui Hisashi
    Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University
  • Hirao Akira
    Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University
  • Nobutoki Koji
    Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University

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Description

Polymerization of tetrahydrofuran (THF) by 2-methyl-1,3-dioxolenium perchlorate clarified the living nature of the polymerization. Although the initiation reaction is slower than the propagation reaction, the bonding mechanism of the initiation was shown from NMR and IR, and the formation of one polymer chain from one catalyst molecule was substantiated. Poly-THF di-cation of Mn 173000 to 322000 was prepared in high vacuum system by using a bifunctional initiator, 2,2′-octamethylene bis-1,3-dioxolenium perchlorate. Chain scission by sodium and n-butyl alcohol proved the presence of the living di-cation. The deviation from monodisperse molecular weight distribution is explained by the rate of the initiation reaction.

Journal

  • Polymer Journal

    Polymer Journal 2 (1), 43-49, 1970

    The Society of Polymer Science, Japan

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Details 詳細情報について

  • CRID
    1390282681267954816
  • NII Article ID
    130004767940
  • DOI
    10.1295/polymj.2.43
  • ISSN
    13490540
    00323896
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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