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Dyeing Kinetics of an Acid Dye in a Nylon Film
Author(s) -
Sada E,
Kumazawa H,
Ando T
Publication year - 1984
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.1478-4408.1984.tb00964.x
Subject(s) - dyeing , kinetics , adsorption , penetration (warfare) , diffusion , acid dye , partition coefficient , nylon 6 , chemical engineering , materials science , polymer chemistry , nylon 66 , molecule , relaxation (psychology) , chemistry , chromatography , organic chemistry , composite material , thermodynamics , polymer , polyamide , mathematics , psychology , social psychology , physics , quantum mechanics , operations research , engineering
The dyeing kinetics of an acid dye (C. I. Acid Blue 182) in a nylon 6 substrate was investigated using partition–cell and film–roil methods. The concentration dependence of the diffusion coefficient of acid dye in the nylon film was derived from both methods and compared with a prediction based on diffusion together with adsorption equilibrium established instantaneously between mobile and immobilised dye molecules in pores. These two sets of experimental results were found to be incompatible with each other. It was deduced that two kinds of region exist in the nylon, one being a region available for rapid penetration and the other, connected to it and formed by slow relaxation, a region of poor penetration.