Effect of composition on the dielectric properties of hydrogels for biomedical applications.

Abstract:

:The effect of composition on the dielectric properties of hydrogels for biomedical applications is experimentally investigated. The hydrogels, containing hydroxyethylcellulose (HEC), are characterized by means of the impedance spectroscopy technique. The real and imaginary parts of the electrical impedance of the hydrogels are determined for several concentrations of HEC, and of KCl, dissolved in it, for the frequency range of interest for biomedical applications. The results are compared with those corresponding to depurated water. The equivalent conductivity of the hydrogels is evaluated by performing measurements on samples of different thicknesses. With the limit of a small concentration of salt (≤ 6%), the dependence of the electrical conductivity of the hydrogel on the salt concentration is linear.

journal_name

Physiol Meas

authors

Alexe-Ionescu AL,Barbero G,Freire FC,Merletti R

doi

10.1088/0967-3334/31/10/S02

subject

Has Abstract

pub_date

2010-10-01 00:00:00

pages

S169-82

issue

10

eissn

0967-3334

issn

1361-6579

pii

S0967-3334(10)48870-X

journal_volume

31

pub_type

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