Dielectric relaxation in Hylarunic acid sodium salt (CROSBI ID 635730)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Dolanski Babić, Sanja ; Vuletić, Tomislav ; Tomić, Silvia
engleski
Dielectric relaxation in Hylarunic acid sodium salt
Structural properties of Na-HA aqueous solutions can be quantified using dielectric spectroscopy in the frequency range 100 Hz–100 MHz. Two relaxation modes are typically detected that can be attributed to diffusive motion of polyion counterions. The overall study as a function of polyion length, concentration and added salt concentration demonstrates that the motion of polyion counterions detected at MHz frequencies probes collective properties, whereas the motion at kHz range probes single-chain properties of polyelectrolytes. Fundamental length scales found to characterize the polyelectrolyte structure differ for the dilute and semidilute regime and also depend on the strength of electrostatic interactions and the flexibility.
Hylarunic acid; dielectric relaxation
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Podaci o prilogu
2007.
objavljeno
Podaci o matičnoj publikaciji
2nd Christmas biophysics workshop
Rudi Podgornik
Bled:
Podaci o skupu
2nd Christmas Biophysics Workshop
predavanje
18.12.2007-19.12.2007
Bled, Slovenija