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Investigation of the Alkaline Modification of Wool Using New Analytical Methods for the Determination of Degradation
Author(s) -
Steenken I.,
Zahn H.
Publication year - 1986
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.1478-4408.1986.tb01079.x
Subject(s) - dehydroalanine , wool , dyeing , degradation (telecommunications) , chemistry , cystine , lanthionine , cysteine , organic chemistry , materials science , enzyme , composite material , biochemistry , computer science , telecommunications , amino acid , peptide
In order to meet the requirements for brilliant colours and high wet fastness, the cotton component of wool/cotton blends is often dyed with reactive dyes under strongly alkaline conditions. A modified enzymatic method has been used to determine dehydroalanine residues formed in wool during commercial dyeing treatments. Reaction mechanisms of cystine degradation have been studied on the basis of the amounts of dehydroalanine present. Hydrogen sulphide could be determined quantitatively in wool and in dyebaths using an improved method that minimises further cystine degradation and hydrogen sulphide oxidation.