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Some Observations on the Effect of Urea on the Dyeing Behaviour of Wool at Low Temperatures
Author(s) -
Cockett K. R. F.,
Rattee I. D.,
Stevens C. B.
Publication year - 1969
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.1478-4408.1969.tb02853.x
Subject(s) - dyeing , wool , urea , chemistry , aqueous solution , swelling , disperse dye , absorption (acoustics) , polymer chemistry , reactive dye , nuclear chemistry , organic chemistry , materials science , composite material
The effect of adding urea to the dyebath on the rate of absorption of reactive and acid dyes by wool, and of acid dyes by other protein bres, has been studied. Possible modesof action of aqueous solutions of urea on wool are discussed. The observed increase in the ite of dyeing in the presence of urea is due to disaggregation of the dye in solution and reduction in dye‐protein hydrophobic interactions. The action of urea in promoting fibre swelling is also likely to be a contributory factor.