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Dyeing properties of sulphamic acid‐treated wool
Author(s) -
Cameron B A,
Pailthorpe M T
Publication year - 1987
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.1478-4408.1987.tb01117.x
Subject(s) - wool , dyeing , chemistry , acid dye , polymer chemistry , nuclear chemistry , materials science , composite material , organic chemistry
The dyeing behaviour of wool pretreated with sulphamic acid has been investigated. Sulphamic acid introduces sulphonate groups into wool's structure and, when dyed with basic dyes, sulphamic acid‐treated wool has an increased uptake of basic dyes. The light fastness of such dyeings was found to be better than that on untreated wool, being comparable to values obtained on acrylic substrates. The increase in light fastness was investigated using model PVA films. The wash fastness of basic dyes on sulphamic acid‐treated wool was found to be disappointingly low, although the fastness to dry cleaning would be commercially acceptable. Dyeing with an acid dye demonstrated the good resist properties to anionic dyes of the sulphamic acid‐treated wool.