Stereospecific polymerization of vinyl acetate in fluoroalcohols. Synthesis of syndiotactic poly(vinyl alcohol).

• YAMADA Kazunobu

  Joint Research Center for Precision Polymerization (JRCPP)-Japan Chemical Innovation Institute (JCII), Graduate School of Engineering, Nagoya University On leave from R & D Center, Unitika Ltd.

• NAKANO Tamaki

  Department of Applied Chemistry, Graduate School of Engineering, Nagoya University

• OKAMOTO Yoshio

  Department of Applied Chemistry, Graduate School of Engineering, Nagoya University

Bibliographic Information

Other Title

• Stereospecific polymerization of vinyl
• Synthesis of syndiotactic poly(vinyl alcohol)

Abstract

The free-radical polymerization of vinyl acetate (VAc) was carried out in various alcoholic solvents. Fluoroalcohols with a lower pKa and higher bulkiness were effective in enhancing the syndiotactic specificity of the polymerization. The polymerization of VAc in perfluoro-tert-butyl alcohol ((CF₃)₃COH) at -78°C led to a dyad syndiotacticity of 72%, which is the highest value reported for the radical polymerization of vinyl esters. Hydrogen-bonding between the acetyl groups of VAc and polymer and the fluoroalcohol molecule may be responsible for the enhancement of the syndiotactic specific propagation.

Journal

• Proceedings of the Japan Academy, Series B

  Proceedings of the Japan Academy, Series B 74 (3), 46-49, 1998

  The Japan Academy

Keywords

• Poly(vinyl alcohol)
• radical polymerization
• tacticity
• vinyl acetate
• fluoroalcohol
• hydrogenbond

Details

• CRID: 1390282679124272256
• NII Article ID: 130000903051
• NII Book ID: AA00785485
• DOI: 10.2183/pjab.74.46
• ISSN: 13492896
• ISSN: 03862208
• NDL BIB ID: 4503874
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4503874
• Web Site: http://www.jstage.jst.go.jp/article/pjab1977/74/3/74_3_46/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed