VISCOSITY OF BLENDS OF LINEAR AND CYCLIC MOLECULES OF SIMILAR MOLECULAR MASS.

G. B. McKenna, D. J. Plazek

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Narrow fractions of linear polystyrene were added to cyclic polystyrenes of similar molecular weights. For weight concentrations, phi //c, of the cyclic polymers from 0. 85 to 1. 0 it is found that the shear viscosity can be represented by a power law in the concentration with an exponent of approximately minus 5. 6, i. e. eta //0 alpha phi //c** minus **5**. **6. These results suggest that discrepancies between reports in the literature for the molecular weight dependence of the melt viscosity of cyclic polymers can only be partly accounted for by contamination of the rings with linear chains.

Original languageEnglish
Pages (from-to)304-306
Number of pages3
JournalPolymer communications Guildford
Volume27
Issue number10
StatePublished - Oct 1986

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