Open AccessИмпедансная спектроскопия электропроводящих композиционных материалов на основе микроволокон сополимера поливинилиденфторида с трифторэтиленом, модифицированных полипирролом
Author(s) -
В.М. Капралова,
И.Ю. Сапурина,
Н.Т. Сударь,
А.А. Третьяков,
Oleksandr Gryshkov,
Birgit Glasmacher
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.11.51010.18721
Subject(s) - polypyrrole , materials science , polyvinylidene fluoride , dielectric , doping , electrical impedance , electrolyte , nanocomposite , composite material , microfiber , polymer , nanofiber , conductive polymer , electrode , optoelectronics , chemistry , electrical engineering , polymerization , engineering
The impedance spectra of composite nonwoven materials based on nano- and microfibers of polyvinylidene fluoride-trifluoroethylene copolymer modified by polypyrrole with different doping degree were studied in the frequency range 1000 Hz-5 MHz. It was found that an increase in the doping degree of polypyrrole coating of nanofibers leads to a decrease in the imaginary and real components of the electrical impedance. Regardless of their magnitude, the shape of the hodographs is close to circular arc resting on the ReZ axis, which allows us to consider the studied material as a nanocomposite polymer electrolyte whose dielectric characteristics can be reversibly changed.