DYNAMICS OF RODLIKE POLYMERS IN DILUTE-SOLUTION

In this paper we calculate the translational and rotational friction c oefficients for a suspended rigid rod as well as its contribution to t he viscosity in the dilute limit as a function of the aspect ratio. In the long rod limit the asymptotic behavior is found to be identical t o Yamakawa's expressions. For finite rods, our results, in particular those for the translational friction coefficient, reproduce numerical values obtained by Tirado et al. and differ from the values obtained b y Broersma using the Oseen-Burgers approximation and from the values o btained later using the slender body theory.