Kinetics of semidilute and dense polymer solution: the time dependence of single-chain dynamics

The single-chain motion of flexible bead polymer chains in solution was investigated taking into account hydrodynamic screening. The Oseen-like tensor was found within the Debye-Bueche-Brinkman effective-medium model, which describes the polymer solution. Two dynamical regimes in time scales were predicted: Zimm-like motion and Rouse-like motion. The time dependence of the hydrodynamic screening length was considered.