Impedance spectroscopy of polyaniline coated hydrogel

Mustafa Okutan*, Erdem Yavuz*, Esma Ahlatcıoğlu Özerol*, B. Filiz Şenkal, Orhan Yalçın, Alptekin Yıldız

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A sulfonic acid functional hydrogel was prepared starting from the copolymerization of 2-acrylamido-2-methyl-1-propanesulfonic acid as monomer and tetraallyl ammonium bromide as a cross-linking agent in the presence of K2S2O8 as a radical initiator. Aniline was interacted with the hydrogel, and oxidative polymerization reaction of anilinium sulfonate salt containing hydrogel was performed by using ammonium persulfate to obtain conducting gel material. The electrical/dielectric properties of the PANI-coated hydrogel were analyzed using impedance spectroscopy. The frequency dependence of the real (ε′) and imaginary (ε″) parts of the dielectric constant (ε), dissipation factor, the real (σ′) and imaginary (σ″) parts of the ionic conductivity (σ), Cole–Cole plots and impedance parameters values for the PANI-coated hydrogel were analyzed in the frequency range of 100 Hz–15 MHz at room temperature. PANI-coated hydrogel shows the non-Debye relaxation type in the materials. The conductivity mechanisms of PANI-coated hydrogel are super linear power law and extended pair approximation.

Original languageEnglish
Pages (from-to)4473-4486
Number of pages14
JournalPolymer Bulletin
Volume78
Issue number8
DOIs
Publication statusPublished - Aug 2021

Bibliographical note

Publisher Copyright:
© 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

  • Conducting gel
  • Dielectric properties
  • Hydrogel
  • PANI

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