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Effect of chain aggregation and ionic interactions on the proton dissociation equilibria of weak polyacids
Author(s) -
Cesàro Attilio,
Sagui Maria Celeste
Publication year - 1992
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19920580105
Subject(s) - polyelectrolyte , counterion condensation , counterion , ionic bonding , dissociation (chemistry) , chemistry , chemical physics , thermodynamics , computational chemistry , ion , organic chemistry , polymer , physics
A theoretical interpretation of the dissociation behavior of weak polyacids is given. Incorporation of conformational variability in the free energy of a polyelectrolyte system extends the validity of the counterion condensation theory to cases in which cooperative transitions and/or aggregation phenomena take place. Comparison of the theoretical predictions with experimental data on ionic polysaccharides, either natural or derivatives, is presented.