Communication: Counter-ion solvation and anomalous low-angle scattering in salt-free polyelectrolyte solutions

Published: December 29, 2017

Author(s)

Alexandros Chremos, Jack F. Douglas

Abstract

We investigate the influence of counter-ion solvation on the homogeneity of salt-free polyelectrolyte solutions based on coarse-grained model that includes an explicit solvent. Increasing the short-range attraction interaction strength of the counter-ions with the solvent is found to cause a transformation between a nearly homogeneous polymer solution to a non-uniform solution in which the chains cluster “voids” rich in solvent form. These heterogeneous structures indicate the presence of long-range attractions and their emergence is rationalized by the effect of counter-ion ionization on the interchain interaction.
Citation: The Journal of Chemical Physics
Volume: 147
Pub Type: Journals

Keywords

polyelectrolytes, association, solution, polymers, long-range
Created December 29, 2017, Updated November 10, 2018