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Homogeneous mixtures of polybetaines with low molecular weight salts
Author(s) -
Bonte Nelly,
Laschewsky André,
Mayer Bernd,
Vermylen Valérie
Publication year - 1996
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.19961020133
Subject(s) - miscibility , homogeneous , salt (chemistry) , amorphous solid , polymer , ionic bonding , materials science , chemical engineering , ionic liquid , polymer chemistry , chemistry , chemical physics , organic chemistry , thermodynamics , ion , catalysis , physics , engineering
The prepaparation of amorphous, homogeneous blends of zwitterionic polymers with various low molecular weight salts, and in particular with ionic dyes was studied. Homogeneous miscibility was achieved in many cases up to equimolar amounts of salt, even for bulky compounds. Whether miscibility is achieved, or not, depends in a subtle way on the chemical structure of the salt, but no obvious correlation between structure and miscibility could yet be revealed. Spectral shifts of the dye UV/Vis spectra in solution as well as in bulk suggest strong interactions between the polybetaines and the admixed salts.