Frictional properties of dilute polymer solutions IV. Intrinsic viscosity

In the framework of our generalization of the Debye-Bueche theory for the frictional properties of dilute polymer solutions we study the intrinsic viscosity. A careful definition of the intrinsic viscosity for polymers with spherically symmetric density distribution is given. The equations are solved explicity for uniform spheres and spherical shells. For the general case a perturbation method is applied and a variational principle of minimum energy dissipation is formulated which is suitable for numerical work.