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Adsorption of Cationic Dyes by Acrylic Films II—Kinetics of Dyeing
Author(s) -
Harwood R. J.,
McGregor R.,
Peters R. H.
Publication year - 1972
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1972.tb03092.x
Subject(s) - dyeing , diffusion , kinetics , cationic polymerization , ionic bonding , chemistry , adsorption , ion , polymer , chemical engineering , thermodynamics , polymer chemistry , organic chemistry , physics , quantum mechanics , engineering
Concentration distributions of basic dyes in a film of acrylic polymer have been determined using a microdensitometric technique. The diffusion coefficients calculated from them are dependent on concentration. An explanation of the dependence is offered based on the ionic transfer of hydrogen (or sodium) ions for dye. From the concentration dependence an average diffusion coefficient was calculated and found to agree with that calculated from rates of dyeing. Rates of dyeing of a binary mixture have demonstrated the competitive effect predicted by the diffusion equation derived for the individual dyes.