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Статья
2000

Potentiostatic formation of semipenetrable polymeric acrylamideformaldehyde films and the electrochemical behavior of electrodes modified by such films


L. G. Kolzunova L. G. Kolzunova , A. P. Suponina A. P. Suponina
Российский электрохимический журнал
https://doi.org/10.1007/BF02756945
Abstract / Full Text

The potentiostatic formation of an acrylamideformaldehyde copolymer film on a platinum cathode is studied by the voltammetry and impedance methods. As the process is nonstationary in time, the film has a complex nonuniform structure, and the film’s density depends on potential and electrolysis duration. The electrochemical behavior of the electrode-polymeric film composition is examined. The polymer is electrochemically stable at 0.5 to -0.7 V (Ag/AgCl) and contains no electron-exchange or ion-exchange functional groups that could undergo redox conversions in this potential range. The synthesized film is semipenetrable and has ultrafiltration characteristics. The diffusion mobility of depolarizers in the film is lower than that in solution and is determined by the nature and properties of species moving in the electrical field and by the ratio between sizes of depolarizer ions and pores of the film.

Author information
  • Institute of Chemistry, Far East Division, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, 690022, Vladivostok, Russia

    L. G. Kolzunova & A. P. Suponina

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