Abstract
The translational diffusion coefficient D was determined from dynamic light scattering (DLS) measurements for 14 samples of oligo- and poly(methyl methacrylate)s (a-PMMA), each with the fraction of racemic diads f r =0.19, in the range of molecular weight M w from 5.02×10 2 to 2.18×10 5 in acetonitrile at 44.0°C (θ). AS was expected from the dependence on M w of the intrinsic viscosity reported previously, a double-logarithmic plot of DM w against M w deviaaaaates downwaard from its asymptotic straight line of slope 1/2, following a S-shaped curve
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