The viscosity behavior of linear and branched dextran sulfates

✍ Scribed by Pasika, W. M. ;Cragg, L. H.

• Publisher: John Wiley and Sons
• Year: 1962
• Weight: 450 KB
• Volume: 57
• Category: Article
• ISSN: 0022-3832
• DOI: 10.1002/pol.1962.1205716523

✦ Synopsis

Abstract

Linear and branched samples of potassium dextran sulfate have been prepared without significant degradation from samples of linear and branched dextran having similar intrinsic viscosities. The dilute solution viscosity behavior of these polyelectrolytes has been studied with particular reference to the effect of branching and degree of sulfation. A comparison of the reduced viscosity—concentration curves, in aqueous 0.001__N__ and 0.0005__N__ KCl, of linear and branched potassium dextran sulfate with the same degree of sulfation revealed a significant difference in their viscosity behavior. This difference is attributed to a greater charge density in the nonlinear sample resulting from its branched structure.