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ESR investigation on gamma-irradiated methylcellulose and hydroxyethylcellulose in dry state and in aqueous solution

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Abstract

Two derivatives of cellulose were investigated by ESR method after gamma-irradiation. Irradiation of methylcellulose (MC) and hydroxyethylcellulose (HEC) results in formation of radicals on these polysaccharides. Their transformations cause main-chain scission or to the opposite effect, crosslinking of polymer. It was proposed that radicals placed on anhydroglucose repeating unit contribute to degradation reactions, and those located on side chains of derivatives, i.e., methoxy group, -O-CH3 and hydroxyetyl ether group, -O-CH2-CH2-OH participate in crosslinking.

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Authors and Affiliations

  1. Nuclear Engineering Research Laboratory, The University of Tokyo, 2-22 Shirakata-Shirane, Tokai, 319-1188, Ibaraki, Japan

    R. A. Wach

  2. Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University Kiryu, 376-8515, Japan

    H. Mitomo

  3. Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, 370-1292, Japan

    F. Yoshii

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  1. R. A. Wach
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  2. H. Mitomo
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  3. F. Yoshii
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Wach, R.A., Mitomo, H. & Yoshii, F. ESR investigation on gamma-irradiated methylcellulose and hydroxyethylcellulose in dry state and in aqueous solution. Journal of Radioanalytical and Nuclear Chemistry 261, 113–118 (2004). https://doi.org/10.1023/B:JRNC.0000030943.48622.33

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  • DOI: https://doi.org/10.1023/B:JRNC.0000030943.48622.33

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