An empirical equation relating the intrinsic viscosity of a polymer and its number-, weight- and z-average molecular weights has been used to evaluate the K and a constants of the Mark-Houwink-Sakurada relationship, in cases where data either from monodisperse samples or from samples with known molecular weight distribution are not available. It is shown that accurate K and a values are obtained, provided the ratio of z- to weight-average molecular weights is not too high. © 1991.
Guaita M., Chiantore O., Munari A., Manaresi P., Pilati F., Toselli M. (1991). A general intrinsic viscosity-molecular weight relationship for linear polydisperse polymers-3. Applicability to the evaluation of the mark-houwink-sakurada k and a constants. EUROPEAN POLYMER JOURNAL, 27(4-5), 385-388 [10.1016/0014-3057(91)90193-R].
A general intrinsic viscosity-molecular weight relationship for linear polydisperse polymers-3. Applicability to the evaluation of the mark-houwink-sakurada k and a constants
Manaresi P.;Pilati F.;Toselli M.
1991
Abstract
An empirical equation relating the intrinsic viscosity of a polymer and its number-, weight- and z-average molecular weights has been used to evaluate the K and a constants of the Mark-Houwink-Sakurada relationship, in cases where data either from monodisperse samples or from samples with known molecular weight distribution are not available. It is shown that accurate K and a values are obtained, provided the ratio of z- to weight-average molecular weights is not too high. © 1991.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
