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Blends of polyurethane carboxylates with styrene vinylpyridinium copolymers
Author(s) -
Rutkowska Maria,
Eisenberg Adi
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070420624
Subject(s) - miscibility , styrene , polystyrene , copolymer , polymer chemistry , polyurethane , materials science , pyridinium , carboxylate , chemistry , organic chemistry , polymer , composite material
This is a continuation of an ongoing investigation of miscibility enhancement via ionic interactions in urethane‐styrene blends. The present study deals with a polyurethane which contains in the hard segments pendant carboxylate groups neutralized by ammonium ions while the polystyrene contains pendant vinyl pyridinium methyl iodide groups. Miscibility of the styrene is seen with the hard segments of the urethane because of ion pair/ion pair interactions. Methanol extraction raises the T g because it eliminates low molecular weight components, without removing the microions.