Formation and reaction of polymer ions in solutions studied by pulse radiolysis

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Abstract

Formation and reaction of polymer anions in solutions of poly(methyl methacrylate), poly(ethyl methacrylate), poly(n-butyl methacrylate), poly(isobutyl methacrylate) and poly(4-vinylbiphenyl) in hexamethylphosphorictriamide and 2-methyltetrahydrofuran were studied by nanosecond pulse radiolysis. The rate constants of the reactions of the polymers with solvated electrons were determined and they were compared with those of the corresponding low molecular-weight molecules. Besides, the decay reactions as well as the electron transfer reactions of the anion radicals of these polymers were investigated. The time-profile of the poly(4-vinylbiphenyl) anion observed in 2-methyltetrahydrofuran at room temperature showed a spike which was followed by a slow decay. The fast decaying component was tentatively attributed to geminate recombinations within micro domains in the solution where the polymers were entangled.

References (12)

  • M. Matsushima et al.

    Radiat. Phys. Chem.

    (1987)
  • J.H. Baxendale et al.

    The Study of Fast Processes and Transient Species by Electron Pulse Radiolysis

    (1981)
  • M. Ogasawara et al.

    J. Phys. Chem.

    (1987)
  • M. Ogasawara et al.

    J. Phys. Chem.

    (1985)
  • H. Tachikawa and M. Ogasawara. To be...
  • G.A. Salmon et al.

    Can. J. Chem.

    (1974)
There are more references available in the full text version of this article.

Presented at the 3rd Japan-China Bilateral Symposium on Radiation Chemistry, Changchun (24 June 1987).

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