Lattice Density Functional Theory for Polymer Adsorption at Solid-Liquid Interface

A lattice density functional theory for polymer adsorption at solid-liquid interface presented in this paper may account for the nearest-neighbour interactions and the long-range correlations due to chain connectivity.Based on a bulk Helmholtz free energy of mixing and a simple weighting procedure,a Helmholtz free energy function containing both local and nonlocal contribution are constructed.The theory predicts density distributions in excellent agreement with the simulation results,and shows prominent(improvement) over the classical Scheutjens-Fleer theory.