ELECTRICAL-CONDUCTIVITY STUDIES IN HYDROGELS

Authors
PISSIS P KYRITSIS A
Citation
P. Pissis et A. Kyritsis, ELECTRICAL-CONDUCTIVITY STUDIES IN HYDROGELS, Solid state ionics, 97(1-4), 1997, pp. 105-113
Citations number
31
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
97
Issue
1-4
Year of publication
1997
Pages
105 - 113
Database
ISI
SICI code
0167-2738(1997)97:1-4<105:ESIH>2.0.ZU;2-Y
Abstract
The electrical conductivity of poly(hydroxyethyl acrylate) PHEA, hydro gels was studied by means of dielectric relaxation spectroscopy in wid e ranges of frequency (5 Hz-2 GHz), temperature (173-363 K) and water content (0.065-0.46 g of water per gram of dry material). The data are analyzed within the formalisms of permittivity, impedance and modulus . The results are discussed in terms of temperature- and water-induced effects, shape of the response, fragility and homogeneous-heterogeneo us nature of the hydrogels.