Abstract
It has been well known that there was a simple relationship between intrinsic viscosity and a parameter expressing the dependence of the sedimentation constant on concentration for a number of vinyl polymers,
This relationship, however, could not be applied to the solution of cellulose derivatives and such fact has been quantitatively explained by taking into account the partly free draining effect on the hydrodynamic properties.The equation obtained from the consideration of the effect of free draining on solution properties indicates that the ratio ks/[η] increases with the increase of the draining parameter when X<1, and approaches to a constant value with the increase of X when X was larger than 1, and these results are in a good agreement with the experimental results reported in literatures.
