Branched Structure of Polyvinyl Acetate

DOI

Bibliographic Information

Other Title
  • ポリ酢酸ビニルの分岐構造について
  • II.Polarographic Determination of Carboxyl Group in Polyvinyl Alcohol
  • 第2報ポリビニルアルコール中のカルボキシル基の, ポーラログラフによる定量

Description

Since the methyl group of the acetyl radical is the principal site in the branching of polyvinyl acetate, polyvinyl alcohol (PVA) obtained by saponification has carboxyl group as the end group.In the present report the determination of carboxyl group in PVA was studied by polarography. After treating PVA with calcium acetate, calcium combined with PVA was determined polarographically by the use of 4-6N ammonium hydroxide solution composed of Zn-Complexonate as the supporting electrolyte.The carboxyl groups of PVA obtained by the bulk and solution polymerizations were measured by this method.From these results, the transfer constant with the monomer and that with the polymer of vinyl acetate were obtained. The former was 2.6×10-4, and the latter 1.4×10-4, (at 60°C).

Journal

  • Kobunshi Kagaku

    Kobunshi Kagaku 14 (143), 127-132, 1957

    The Society of Polymer Science, Japan

Details 詳細情報について

  • CRID
    1390282681497630208
  • NII Article ID
    130003835233
  • DOI
    10.1295/koron1944.14.127
  • ISSN
    18848079
    00232556
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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