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Reduced diffusion coefficients D/D0 for various molecular weight PEG as a function of the corresponding Stokes-Einstein radius Rs. Data are shown for three q values: 3.5 (triangles), 4.5 (circles), and 5.5 (squares). Solid curves show the best-fit Davidson and Deen model (76,77) predictions for the mean pore radii 〈Rp〉 listed in Table 2.
