Title :
Dielectric spectroscopy of hyaluronic acid and its salts
Author :
El-Fakhri, S. ; Holcman, V. ; Liedermann, K.
Abstract :
Hyaluronic acid is a high-molecular-weight polysaccharide found mostly in a human body and widely used in biomedical applications. Our study was focused on its electrical properties in the temperature range 25 K - 325 K and in the frequency range 100 Hz - 1 MHz. Three conductivity regions were found: DC conductivity, universal dielectric response and the super linear power law with the observed frequency dependence of conductivity being sigma ~ omega1.06. Activation energy of the DC conductivity process was established to be 5.4 MJ/kmol.
Keywords :
dielectric relaxation; electrical conductivity; organic compounds; permittivity; DC conductivity; dielectric spectroscopy; electrical properties; frequency 100 Hz to 1 MHz; high-molecular-weight polysaccharide; hyaluronic acid; super linear power law; temperature 25 K to 325 K; universal dielectric response; Biological materials; Biomedical materials; Conductivity; Dielectric materials; Electrochemical impedance spectroscopy; Electrodes; Frequency; Glass; Humans; Powders;
Conference_Titel :
Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on
Conference_Location :
Mie
Print_ISBN :
978-4-88686-005-7
Electronic_ISBN :
978-4-88686-006-4
DOI :
10.1109/ISEIM.2008.4664539
