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A cationic surfactant is bound to poly(vinylpyrrolidone) in high pH media

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Abstract

Interaction of tetradecylpyridinium bromide with poly(vinylpyrrolidone) was studied by use of an electrode sensitive to the cationic surfactant. In a neutral medium, there was no sign of interaction: potentiometric titration response was in agreement with Nernst equation irrespective of absence and presence of the polymer. But in a medium with pH 11.3, deviation from Nernst response appeared in a PVP solution showing binding of the cationic surfactant onto the polymer which had been thought indifferent to cationic surfactants in spite of strong affinity to anionic surfactants. The result is interpreted in terms of deprotonation from PVP at higher pH media.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science and Engineering, Saga University, 840, Saga, Japan

    K. Shirahama, K. Mukae & H. Iseki

Authors
  1. K. Shirahama
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  2. K. Mukae
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  3. H. Iseki
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Shirahama, K., Mukae, K. & Iseki, H. A cationic surfactant is bound to poly(vinylpyrrolidone) in high pH media. Colloid Polym Sci 272, 493–496 (1994). https://doi.org/10.1007/BF00659463

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  • DOI: https://doi.org/10.1007/BF00659463

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