Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10481716 | Physica A: Statistical Mechanics and its Applications | 2005 | 8 Pages |
Abstract
We present a model for describing flexible polyelectrolytes in a good solvent and in the presence of monovalent salt. The molecule composed by N monomers is characterized by the end-to-end distance Re=b(Z-1)γ and the number of associated counterions n. At high temperatures the polyelectrolyte behaves as a neutral polymer (γ=0.588). Decreasing the temperature, the macromolecule changes from this extended configuration (γ=0.588) to a stretched form (γâ1). At even lower temperatures, above the Manning condensation threshold, the polyelectrolyte collapses (γâ0.3). Our results show good agreement with simulations.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Paulo S. Kuhn, Marcia C. Barbosa,