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Dilute solution behavior of a cationic polyelectrolyte
Author(s) -
KienzleSterzer Carlos,
RodriguezSanchez Dolores,
Rha Chokyun
Publication year - 1982
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1982.070271133
Subject(s) - polyelectrolyte , cationic polymerization , acetic acid , intrinsic viscosity , polymer chemistry , hydrogen bond , solvent , polymer , chemistry , viscosity , chemical engineering , chitosan , aqueous solution , molecule , materials science , organic chemistry , composite material , engineering
Dilute solution behavior of a cationic polyelectrolyte was studied with respect to acetic acid concentration using chitosan. The reduced viscosity, η sp / C , of chitsan solutions increases with a decrease in the polymer concentration. For a given polyelectrolyte concentration, the specific viscosity is higher at lower acid (acetic) concentration, indicating the expansion of the polyelectrolyte chain due to electrostatic repulsion as a result of the interactions between chitosan and the solvent. The relationship between intrinsic viscosity [η]∞ and acetic acid concentration suggests no conformational transition of the chitosan molecules and possible formation of intramolecular hydrogen bonds during the shrinking of the hydrodynamic domain of the polyions.