Influence of Hydrodynamic Interaction on the Viscoelastic Behavior of Dilute Polymer Solutions in Good Solvents

Abstract

The treatment by Ptitsyn and Eizner of the dynamics of dilute polymer solutions for dominant hydrodynamic interaction, taking into account excluded volume effects, is extended to the general case for changing hydrodynamic interaction. The function Φ (h, ε) is tabulated for selected values of ε, the parameter which accounts for the expansion of the coil due to excluded volume effects. An approximate derivation of the storage and loss moduli from this theory is proposed. According to this calculation, an increase in ε causes a shift of the frequency dependence of the moduli from Zimm‐like toward Rouse‐like behavior. The determination of ε from experimental data is discussed.