  In this paper, we present a self-consistent field theory of macroscopic
forces in spatially inhomogeneous flexible chain polyelectrolyte solutions. We
derive an analytical expression for a stress tensor which consists of three
terms: isotropic hydrostatic stress, electrostatic (Maxwell) stress, and stress
rising from conformational entropy of polymer chains -- conformational stress.
We apply our theory to the description of polyelectrolyte solutions confined in
a conductive slit nanopore and observe anomalous behavior of disjoining
pressure and electric differential capacitance.
