Heterogeneous Living Cationic Polymerization of Vinyl Ether Using a Heteropoly Acid

• MATSUO Yousuke

  Department of Macromolecular Science, Graduate School of Science, Osaka University

• KANAOKA Shokyoku

  Department of Macromolecular Science, Graduate School of Science, Osaka University

• AOSHIMA Sadahito

  Department of Macromolecular Science, Graduate School of Science, Osaka University

Bibliographic Information

Other Title

• ヘテロポリ酸によるビニルエーテルの不均一リビングカチオン重合

Abstract

Heterogeneously catalyzed cationic polymerization of isobutyl vinyl ether was examined using a heteropoly acid combined with an added base. Polymerization using H₃PW₁₂O₄₀ in the presence of a cyclic ether in dichloromethane induced only conventional cationic polymerization. In contrast, living polymerization was achieved in ethyl acetate in the presence of dimethyl sulfide at −30°C, producing polymers with very narrow molecular weight distributions. The M_n values of the obtained polymers were in direct proportion to the monomer conversion and in good agreement with the calculated values, when one assumes that all three protons of H₃PW₁₂O₄₀ initiated polymerization. MALDI-TOF-MS analysis demonstrated that the product polymer had the structures derived from only initiation with a proton and termination with methanol, terminator.<br>

Journal

• KOBUNSHI RONBUNSHU

  KOBUNSHI RONBUNSHU 68 (4), 176-181, 2011

  The Society of Polymer Science, Japan

Keywords

• Living Polymerization
• Cationic Polymerization
• Heteropoly Acid
• Added Base
• Vinyl Ether

Details

• CRID: 1390001206525359872
• NII Article ID: 130004489309
• DOI: 10.1295/koron.68.176
• ISSN: 18815685
• ISSN: 03862186
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed