Hydrodynamic interaction and the dynamic intrinsic viscosity of a flexible polymer

Mordechai Bixon*, Robert Zwanzig

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We extend an earlier calculation by C. W. Pyun and M. Fixman [J. Chem. Phys. 44, 2107 (1966)], dealing with the effects of hydrodynamic interaction on the intrinsic viscosity of a flexible polymer in solution. We use their general formulation of the problem, but perform a more complete "infinite order" calculation of eigenvalues and eigenvectors. For the steady state viscosity constant, we obtain a new value Φ=2.76, which lies between their result 2.66 and the value 2.856 which is found when the preaveraged hydrodynamic interaction is used. Further, we obtain the spectrum of relaxation times, and the frequency dependent intrinsic viscosity. The effects of preaveraging are more striking here; for example, our calculated lowest relaxation time is about twice as large as that found in the preaveraged approximation.

Original languageEnglish
Pages (from-to)1890-1895
Number of pages6
JournalThe Journal of Chemical Physics
Issue number4
StatePublished - 1977


Dive into the research topics of 'Hydrodynamic interaction and the dynamic intrinsic viscosity of a flexible polymer'. Together they form a unique fingerprint.

Cite this