Open AccessPhase transitions in segmented polyesterurethane–DMSO–water systems
Author(s) -
Heijkants R. G. J. C.,
Van Calck R. V.,
De Groot J. H.,
Pennings A. J.,
Schouten A. J.
Publication year - 2005
Publication title -
journal of polymer science part b: polymer physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 145
eISSN - 1099-0488
pISSN - 0887-6266
DOI - 10.1002/polb.20377
Subject(s) - crystallization , ternary operation , phase (matter) , cloud point , polyurethane , materials science , chemical engineering , ternary numeral system , thermodynamics , polymer chemistry , chemistry , composite material , organic chemistry , aqueous solution , physics , engineering , computer science , programming language
The phase separation processes occurring in polyurethane/DMSO/water mixtures were studied using DSC and cloud point measurements. It is demonstrated that liquid–liquid demixing occurs in ternary solutions of segmented polyesterurethanes at sufficiently high water concentrations. It is also shown that the hard segment can crystallize from solution when cooled to room temperature; while if the mixture is cooled to sufficiently low temperatures, DMSO partially freezes, which also induces crystallization of the soft segment. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 716–723, 2005
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