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Supramolecular structures and conformational transitions in polyelectrolyte gels
Author(s) -
Khokhlov Alexei R.,
Makhaeva Elena E.,
Philippova Olga E.,
Starodubtzev Sergei G.
Publication year - 1994
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.19940870111
Subject(s) - polyelectrolyte , polymer , ethylene oxide , micelle , ionic bonding , supramolecular chemistry , polymer chemistry , ionomer , materials science , ionic strength , chemical physics , methacrylic acid , chemical engineering , chemistry , copolymer , organic chemistry , molecule , aqueous solution , ion , engineering
Three actual problems connected with the collapse transition of polyelectrolyte gels in poor solvent are reviewed. (i) The first topic is the appearance of microstructures for polyelectrolyte gels in poor enough solvents. Three reasons for microsegregation are discussed: effect of polyelectrolyte – hydrophobic competition, effect of the formation of multiplets from ionic pairs in the ionomer regime and the effect of partial formation of glassy kinetically frozen polymer rich regions. (ii) Second we analyze the interaction of the gels with polymers which are capable to form complexes with the gel chains. Main experimental results are presented for poly(methacrylic acid) gels interacting with poly(ethylene oxide), (iii) Finally, we consider the problem of interaction of polyelectrolyte gels with the sufactants. The micelle formation of surfactants inside the gel and its consequences for the conformational properties of the gel are discussed in detail.