Communication: Counter-ion solvation and anomalous low-angle scattering in salt-free polyelectrolyte solutions
Alexandros Chremos, Jack F. Douglas
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.
and Douglas, J.
Communication: Counter-ion solvation and anomalous low-angle scattering in salt-free polyelectrolyte solutions, The Journal of Chemical Physics, [online], https://doi.org/10.1063/1.5010784
(Accessed December 2, 2023)