Dynamic properties of solutions. Models for chain molecule dynamics in dilute solution

The behaviour of the Zimm model for flexible chain dynamics is illustrated by the dielectric response for arbitrary field strength and by a calculation of the intrinsic viscosity from an appropriate time correlation function. The stochastic dynamics of a chain with constant bond lengths and weak correlations between adjacent bond directions are developed and applied to the dielectric experiment. Introduction of rotational diffusion in parallel to local conformational changes appears to offer a useful approach to the problem of internal viscosity.