Abstract
A new model is developed for the solvent flow relative to a swarm of polymer coils in a dilute solution and blobs in a semidilute range. The basic idea is that each coil and blob consist of monosized non-porous spheres and pure solvent. Using the porous [Polym. J., 18, 783 (1986)] and hard sphere models, generalized coordinates are derived to correlate the concentration and molecular weight dependences of sedimentation coefficient for any polymer-solvent system onto a single curve. The analytical expression for the portrayal of the curve is also presented. The theory is verified for sedimentation coefficient measured for both a polymer-solvent system at the theta temperature and a polymer-good solvent system.
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Gmachowski, L. A Universal Curve Representing the Concentration and Molecular Weight Dependences of Sedimentation Coefficient. Polym J 22, 771–775 (1990). https://doi.org/10.1295/polymj.22.771
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DOI: https://doi.org/10.1295/polymj.22.771