Phase Separation in Aqueous Polymer Solutions as Studied by NMR Methods | Zendy

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Phase Separation in Aqueous Polymer Solutions as Studied by NMR Methods

Author(s) -

Spěváček Jiří

Publication year - 2005

Publication title -

macromolecular symposia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 76

eISSN - 1521-3900

pISSN - 1022-1360

DOI - 10.1002/masy.200550401

Subject(s) - aqueous solution , polymer , polymer chemistry , copolymer , materials science , ether , solvent , relaxation (psychology) , phase (matter) , methacrylate , methyl methacrylate , chemistry , chemical engineering , organic chemistry , psychology , social psychology , engineering , composite material

Some possibilities of 1 H NMR spectroscopy in investigations of structural‐dynamic changes and polymer‐solvent interactions during the temperature‐induced phase transitions in aqueous polymer solutions are described. Results obtained recently on D 2 O solutions of poly(vinyl methyl ether) (PVME), poly( N ‐isopropylmethacrylamide) (PIPMAm), negatively charged copolymers of N ‐isopropylmethacrylamide and sodium methacrylate, and PIPMAm/PVME mixtures are discussed. A markedly different rate of dehydration process in dilute solutions on the one hand, and in semidilute and concentrated solutions on the other hand, was revealed from 1 H spin‐spin relaxation measurements.

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