Multinuclear n.m.r. studies on sol-gel transition of κ-carrageenan. Selective interaction of group I cations

Masayuki Tokita, Mitsuhiko Ikura, Kunio Hikichi

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Multinuclear n.m.r. experiments were carried out to study a selective interaction between group I cations and κ-carrageenan. It was found that the n.m.r. intensity of gel-forming cations undergoes a rapid change in the vicinity of sol-gel transition temperature. On the other hand, the n.m.r. intensity of a non-gel forming cation which coexists with a gel-forming cation does not show any singular behaviour at the sol-gel transition. These results strongly suggest that gel-forming cations selectively interact with κ-carrageenan.

Original languageEnglish
Pages (from-to)693-697
Number of pages5
Issue number4
Publication statusPublished - Apr 1989


All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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