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Phase equilibria in polymer/solvent systems, 8 . Swelling of chemically crosslinked polymers in mesogenic substances in different states
Author(s) -
Frahn Stephanie,
Borchard Werner
Publication year - 1996
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1996.030170703
Subject(s) - swelling , mesogen , polymer , polyurethane , materials science , polymer chemistry , isotropy , solvent , phase (matter) , liquid crystalline , chemical engineering , composite material , organic chemistry , chemistry , physics , quantum mechanics , engineering
Abstract Swelling curves of chain end‐linked polyurethane networks in mesogenic swelling agents were determined gravimetrically. Different slopes of the swelling curves are observed above and below the transition temperature of the liquid‐crystalline to the isotropic state. From the sign of the slope it can be derived that the swelling agent is not in the liquid‐like state in the gel if the pure swelling agent is liquid‐crystalline.