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Aggregation of basic dyes induced by anionic polyelectrolytes
Author(s) -
Neumann Miguel G.,
Hioka Noboru
Publication year - 1987
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.1987.070340817
Subject(s) - polyelectrolyte , aqueous solution , molecule , polymer , chemistry , polymer chemistry , organic chemistry
The aggregation of basic dyes in aqueous solution in the presence of polyelectrolytes has been studied to determine the nature of the interaction between the dye molecules and the polymer sites. The aggregation induced by carboxymethylcellulose with isolated anionic sites cannot be explained assuming interaction between dye molecules bound to neighbouring sites. Maximum aggregation for various dyes on that polyelectrolyte has been found around P/D = 0.3 whereas for PSS that value is found around 1. Dimerization constants calculated for these systems are in good agreement with the values expected from dimerization in aqueous solutions. A new model is proposed to explain these results.