Macroscopic forces in inhomogeneous polyelectrolyte solutions
Yury A. Budkov, Nikolai N. Kalikin
Abstract
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.
Topics & Concepts
PolyelectrolyteCauchy stress tensorDisjoining pressureIsotropyStress (linguistics)Electric fieldMaxwell stress tensorClassical mechanicsHydrostatic pressurePhysicsMaterials sciencePolymerMechanicsThermodynamicsOpticsNuclear magnetic resonanceQuantum mechanicsLinguisticsWettingPhilosophyNanopore and Nanochannel Transport StudiesElectrostatics and Colloid InteractionsMicrofluidic and Bio-sensing Technologies