ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Dielectric Relaxation Spectroscopy of Some Polysaccharides

K. Liedermann and L. Lapčík

Department of Physics, Faculty of Electrical Engineering and Computer Science, Technical University, CZ-616 00 Brno

Abstract: Dielectric relaxation spectra of four polysaccharides (hyaluronic acid extracted from rooster combs in the form of sodium salt, chondroitin sulfate C extracted from shark cartilage, hydroxyethylcellulose Natrosol H, and carboxymethylcellulose Blanose D) were studied by the time-domain dielectric relaxation spectroscopy in the frequency range 10^-5 to 10^-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 was discussed.

Full paper in Portable Document Format: 504a218.pdf

Chemical Papers 50 (4) 218–223 (1996)