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A general intrinsic viscosity-molecular weight relationship for linear polydisperse polymers—2. Applicability to the evaluation of molecular weights

✍ Scribed by P. Manaresi; F. Pilati; M. Toselli; A. Munari; M. Guaita; O. Chiantore

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
345 KB
Volume
27
Category
Article
ISSN
0014-3057

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✦ Synopsis

A previously derived general equation, correlating the intrinsic viscosity of a polymer with -~'n, ~w and 2~,, is tested with experimental data. Its application for the calculation of average molecular weights is discussed. Good results have been obtained for the calculation of 2f/" z using experimental [r/], 2~,, 2g/ w together with a and K values of the Mark-Houwink-Sakurada equation taken from the literature. On the other hand, the calculation of h/n, -£/w and K/~ from experimental values of It/] in different solvents gives good results for ~f/w, whereas ~, and particularly A;/~ may be very inaccurate in some cases.

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