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An Investigation of the Reactions of Sulphamic Acid with Keratin Fibre
Author(s) -
Elliott R. L.,
Asquith R. S.,
Hobson M. A.
Publication year - 1963
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.1478-4408.1963.tb02547.x
Subject(s) - keratin , wool , chemistry , ionic bonding , molecule , acid dye , polymer chemistry , organic chemistry , ion , materials science , dyeing , biology , composite material , paleontology
The conditions for making wool fibre resistant to acid dyes by treatment with sulphamic acid have been investigated and it has been shown that the major chemical reactions are complex. The amino groups, disulphide bonds, and aliphatic hydroxy groups in the keratin molecule all participate in the reaction. Only a proportion of each type of group is blocked by sulphamic acid. The dye‐resistant effect is largely due to ionic repulsion of the dye by acidic groups so introduced.