2. Relation of Water and Polymer Properties(Seminar : Water in the Living Materials and Foods)

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  • SATOH Mitsuru
    Tokyo Institute of Technology, Undergraduate School of Science and Engineering

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  • 2. 水の性質と高分子(セミナー : 生物・食品と水)
  • 水の性質と高分子
  • ミズ ノ セイシツ ト コウブンシ

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Abstract

A kind of Hofmeister Series for hydrogel swelling was investigated with a special attention to ion effects on the hydrogen-bonding hydration at polar groups on polymer. On the basis of experimental observations for several polymer gels, we proposed a model mechanism for the ion-specific gel swelling. According to the model, the hydrogen-bonding hydration on the polar groups is stabilized or destabilized by ions through ionic hydration since anion and cation change water s abilities for electron pair donation (EPD) and acceptance (EPA), respectively.

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