Journal
JOURNAL OF SUPERCRITICAL FLUIDS
Volume 47, Issue 3, Pages 466-483Publisher
ELSEVIER
DOI: 10.1016/j.supflu.2008.11.010
Keywords
Polymers; Supercritical fluids; High pressure; Carbon dioxide; Mixtures; Dense fluids; Crystallization; Gelation; Morphology; Polymorphism; Miscibility; Phase separation
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This paper is a review of polymer solutions at high pressures with a focus on miscibility, phase separation and morphological modifications in supercritical or compressible dense fluids. The review is aimed at presenting an account of advances made over the past two decades while highlighting the challenges and opportunities for future developments. Even though a broad review is attempted, specific examples are selected mostly from those published in the journal of Supercritical Fluids or from research conducted in the author's laboratory. How the miscibility and phase separation considerations come into play in polymer synthesis, polymer modification, and polymer processing are emphasized. Recent advances made in morphological modifications and polymorphic transformations of polymers achieved by pressure or solvent tuning are discussed in more detail. (C) 2008 Elsevier B.V. All rights reserved.
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