Premium
Dyeing in catalase‐treated bleaching baths
Author(s) -
Tzanov T.,
Costa S.,
Guebitz G.M.,
CavacoPaulo* A.
Publication year - 2001
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2001.tb00327.x
Subject(s) - dyeing , hydrogen peroxide , catalase , chemistry , salt (chemistry) , pulp and paper industry , reactive dye , alkali metal , peroxide , nuclear chemistry , enzyme , organic chemistry , engineering
The conventional rinsing after bleaching to remove the residual hydrogen peroxide, harmful to the reactive colorants, was replaced by enzymatic cleaning using catalases. The catalase‐treated bleaching liquor was reused for dyeing. Though no hydrogen peroxide was detected after the enzymatic process, the bleaching bath composition caused unacceptable colour changes on dyed fabrics. By varying the parameters of the dyeing process – dye, salt, alkali and enzyme concentrations – the colour difference could be reduced significantly and a good dyeing result could be achieved.