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A Nonaqueous Potentiometric Titration Study of the Dissociation of t-Butyl Methacrylate-Methacrylic Acid Copolymers

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Abstract

The dissociation of t-butyl methacrylate-methacrylic acid copolymers in dimethyl sulfoxide was analyzed by a nonaqueous potentiometric titration technique. The negative logarithm of the dissociation constant of the monomer unit of a methacrylic acid (MAA) monotonously increased with the increasing degree of dissociation corresponding to the titrant/MAA amount ratio, and was highly influenced by the copolymerization ratio. The results are discussed in terms of the suppression of the dissociation of MAA by a neighboring charged methacrylate anion unit.

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Author notes

  1. Minoru Toriumi

    Present address: Daikin Industries, Ltd., Settsu, 566-8585, Japan

Authors and Affiliations

  1. Department of Chemistry, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, 305-8571, Japan

    Kiyoharu Nakatani, Jun Yamashita & Tomomi Sekine

  2. Semiconductor Leading Edge Technologies, Inc. (Selete), 16-1 Onogawa, Tsukuba, 305-8569, Japan

    Minoru Toriumi & Toshiro Itani

Authors
  1. Kiyoharu Nakatani
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  2. Jun Yamashita
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  3. Tomomi Sekine
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  4. Minoru Toriumi
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  5. Toshiro Itani
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Corresponding author

Correspondence to Kiyoharu Nakatani.

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Nakatani, K., Yamashita, J., Sekine, T. et al. A Nonaqueous Potentiometric Titration Study of the Dissociation of t-Butyl Methacrylate-Methacrylic Acid Copolymers. ANAL. SCI. 19, 775–777 (2003). https://doi.org/10.2116/analsci.19.775

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  • DOI: https://doi.org/10.2116/analsci.19.775

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