The interaction of a neutral polymer with small ions in solution. III. Ionic association on a poly(oxyethylene) chain.

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概要

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• Conductivities of NaSCN and KSCN solutions have been measured in ethanol and nitromethane in the presence of poly(oxyethylene). For poly(oxyethylene)–KSCN solutions in ethanol and nitromethane, a distinct minimum appears in conductivity <I>vs.</I> polymer concentration curves. In addition, for a poly(oxyethylene)–NaSCN solution in nitromethane, the conductivity curve rises steeply after passing through the minimum. These anomalies cannot be explained by the cation binding to the polymer alone, and the ionic association on the polymer chain should be taken into account at the same time. In order to analyze the results, a theory based on the duplicate ion binding on a one-dimensional lattice has been developed. The theory not only predicts the appearance of the conductivity minima, but also makes it possible to estimate the ionic association constants.

• 公益社団法人 日本化学会の論文

著者

• Murakami Kenkichi

  Chemical Research Institute Of Non-aqueous Solutions

• Ono Katsumichi

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

• Awano Hiroshi

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

関連論文

• Structure and Properties of Degradative Crosslinked Amorphous Polymer Materials : Single Degradation of Crosslinked Polymers. Part I
• The interaction of a neutral polymer with small ions in solution. II. The binding of alkali metal ions to poly(oxyethylene) in several organic solvents.
• The interaction of a neutral polymer with small ions in solution. I. A method for the analysis of ion binding to a neutral polymer.
• The interaction of a neutral polymer with small ions in solution. III. Ionic association on a poly(oxyethylene) chain.

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