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

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

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 319 KB
• Volume: 27
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(91)90193-r

✦ Synopsis

Al~tract--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.