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The Effect of Sulphuric Acid on Wool IV—Some Further Observations of the Reaction with Concentrated Acid
Author(s) -
Elliott R. L.,
Asquith R. S.,
Hopper M. E. P.,
Rawson D. H.
Publication year - 1960
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.1478-4408.1960.tb02374.x
Subject(s) - wool , chemistry , covalent bond , threonine , serine , polymer chemistry , amino acid , organic chemistry , biochemistry , materials science , enzyme , composite material
The following types of wool have been treated with concentrated sulphuric acid—virgin wool, dinitrophenylated wool, and deaminated wool. Subsequent analyses of the treated wools have shown clearly that the amino groups do not give covalent sulphamic acid derivatives, but that the aliphatic hydroxyl groups react rapidly to give sulphate esters. Serine and threonine analyses of treated wools after reaction with sulphuric acid support the theory that an O ‐peptidyl rearrangement occurs. The mechanism proposed for this rearrangement has been modified, and it is suggested that it proceeds through the aliphatic sulphate ester grouping primarily introduced into the wool.