2018 Impact factor 1.686
Soft Matter and Biological Physics


Eur. Phys. J. E 8, 339-346 (2002)
DOI: 10.1140/epje/i2002-10019-y

Equilibrium charge distribution on annealed polyelectrolytes

T. Zito and C. Seidel

Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg, D-14476 Golm, Germany (Mailing address: D-14424 Potsdam, Germany.)

seidel@mpikg-golm.mpg.de

(Received 7 March 2002 and Received in final form 28 May 2002)

Abstract
Monte Carlo simulations are used to study the non-uniform equilibrium charge distribution along a single annealed polyelectrolyte chain under $\theta$ solvent conditions and with added salt. Within a range of the order of the Debye length charge accumulates at chain ends while a slight charge depletion appears in the central part of the chain. The simulation results are compared with theoretical predictions recently given by Castelnovo et al. In the parameter range where the theory can be applied we find almost perfect quantitative agreement.

PACS
61.25.Hq - Macromolecular and polymer solutions; polymer melts; swelling.
36.20.-r - Macromolecules and polymer molecules.
05.20.-y - Classical statistical mechanics.


© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2002