Title :
Study of low-frequency dielectric relaxations in polysaccharides for medical applications
Author :
K. Liedermann;L. Lapcik
Author_Institution :
Dept. of Phys., Tech. Univ. of Brno, Czech Republic
Abstract :
Dielectric relaxation spectra of four polysaccharides (hyaluronic acid in a form of sodium salt, chondroitin sulfate C, hydroxyethylcellulose Natrosol H and carboxymethylcellulose Blanose D) were studied by time-domain dielectric relaxation spectroscopy in the frequency range 10/sup -5/ to 10/sup -1/ Hz. Observed spectra were interpreted as a sum of one conductivity process and one or two relaxation processes using the Havriliak-Negami formula. Numerical values of the parameters of conductivity and relaxation processes were calculated and the physical interpretation of the observed data is discussed.
Keywords :
"Medical services","Biomedical equipment","Dielectric measurements","Current measurement","Time measurement","Electric variables measurement","Chemistry","Conductivity","Drugs","Frequency measurement"
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564663
