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Amphotropic Ionomers by Attachment of Secondary Amines to a Reactive Ester Polymer
Author(s) -
Mruk Ralf,
Prehl Sabine,
Zentel Rudolf
Publication year - 2004
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400262
Subject(s) - mesogen , polymer chemistry , polymer , amide , side chain , chemistry , protonation , amine gas treating , polarity (international relations) , ethylene glycol , hydrogen bond , copolymer , tertiary amine , liquid crystalline , organic chemistry , molecule , ion , biochemistry , cell
Summary: We report on the synthesis of polyacrylamides that were prepared by the reaction of a reactive ester polymer with a mesogen‐containing secondary amine and N ‐methylpiperazine. As the polymers do not form hydrogen bonds near the amide groups, their mobility is significantly higher than that of poly( N ‐monoalkylacrylamides). The initially nonionic polymer shows no liquid‐crystalline behavior in bulk and in mixture with ethylene glycol. This is due to the low polarity difference between the different side chains. The polarity difference can be increased by protonation or quarternization of the tertiary amino groups, and liquid‐crystalline behavior is observed. The self‐assembly multilayer build‐up of the polymer with quarternized amino groups, and an anionic polyelectrolyte proceeds regularly.