Volume 80, Number 6, December 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||05 November 2007|
The dielectric spectrum of flexible polyelectrolyte solutions
Department of Chemistry, National Taiwan University - Taipei 106, Taiwan and Department of Physics, and Center of Theoretical Physics, National Taiwan University - Taipei 106, Taiwan
Accepted: 15 October 2007
The simplest version of the double-layer polarization theory for the flexible polyelectrolyte solution is formulated where the thin-double-layer limit is taken. The double-layer region of the polyelectrolyte contains the excess fluxes of charge and salt where the off-diagonal Onsager coefficient couples the charge- and the neutral-salt dynamics. The dynamic charge and the salt distributions are solved for the weakly charged polyelectrolyte. We calculate the free-energy storage and loss under the applied AC electric field to obtain the dielectric function, which depends on the chain configuration through the chain structure factor. A simple mean-field structure factor for the flexible chains is used to calculate the dielectric spectrum for the full range of the polyelectrolyte concentration.
PACS: 77.22.Gm – Dielectric loss and relaxation / 66.10.-x – Diffusion and ionic conduction in liquids / 82.35.Rs – Polyelectrolytes
© Europhysics Letters Association, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.