Impedance spectroscopy of polyaniline coated hydrogel
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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 K(2)S(2)O(8)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 (epsilon ') and imaginary (epsilon '') parts of the dielectric constant (epsilon), dissipation factor, the real (sigma ') and imaginary (sigma '') parts of the ionic conductivity (sigma), 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.
Açıklama
Anahtar Kelimeler
PANI, Dielectric properties, Conducting gel, Hydrogel
Kaynak
Polymer Bulletin
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
78
Sayı
8
