Electrochemical stability and transformations of fluorinated poly(2,6-dimethyl-1,4-phenylene oxide)

A.A. Pud, S.P. Rogalsky, G.S. Ghapoval, A.P. Kharitonov, Antonius J.B. Kemperman

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Abstract

Fluorination of poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) leads to narrowing of its window of electrochemical stability in a cathodic range of potentials. It is found this is connected with appearance of both perfluorinated and incompletely fluorinated units in the polymer. The former units are liable to electrochemical reduction (at potentials <−2.0 V) followed by elimination of fluorine anions and the latter react with basic products (generated at potentials <−1.8 V) of electrochemical reduction of the background solution. In the both cases this results in appearance of conjugated multiple bonds in the fluorinated macromolecules. Quantities of these units in fluorinated PPO were determined with a help of direct and indirect electrochemical reductive degradation techniques.
Original languageUndefined
Pages (from-to)409-415
Number of pages7
JournalPolymer degradation and stability
Volume2000
Issue number70
DOIs
Publication statusPublished - 2000

Keywords

  • METIS-105691
  • IR-74359
  • Degradation
  • Fluorinated poly(2
  • 4-phenylene oxide)
  • 6-dimethyl-1
  • Stability
  • Electrochemical properties
  • Electrochemical transformations

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