Entropic Corrections to the Flory-Huggins Theory of Polymer Blends: Architectural and Conformational Effects

Glenn H. Fredrickson, Andrea J. Liu, Frank S Bates

Research output: Contribution to journalArticlepeer-review

230 Scopus citations

Abstract

We compute fluctuation corrections to the Flory-Huggins theory for athermal or nearly athermal polymer mixtures. These excess free energy contributions arise from architectural and flexibility differences between components, are quasi-universal, and are generally positive, favoring demixing. Specific cases considered are binary blends of linear homopolymers, homopolymer/block copolymer mixtures, and blends of branched and linear homopolymers. We identify invariant parameters and mixing rules for such systems that may facilitate the design of miscible polyolefin blends.

Original languageEnglish (US)
Pages (from-to)2503-2511
Number of pages9
JournalMacromolecules
Volume27
Issue number9
DOIs
StatePublished - Apr 1 1994

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