A framework for predicting the viscosity of miscible polymer blends

Jeffrey C. Haley, Timothy P. Lodge

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

A new model for the viscosity of miscible polymer blends is described. It combines a mixing rule for chain relaxation, based on the double reptation concept as adopted by Tsenoglou (1989), with a calculation of the concentration dependence of the monomeric friction factors, based on the self-concentration model of Lodge and McLeish (2000). The model is successful in anticipating the experimentally observed curvatures in plots of viscosity versus composition, and the predictions are in promising agreement with the data for several systems. The model introduces no freely adjustable parameters, and all the necessary parameters may be determined from measurements on pure components.

Original languageEnglish (US)
Pages (from-to)463-486
Number of pages24
JournalJournal of Rheology
Volume48
Issue number2
DOIs
StatePublished - Mar 2004

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