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Disulphide Bond Reactivity in Wool‐ Formation of Thiol Radicals on Exposure to Light
Author(s) -
Crawshaw G. H.,
Speakman J. B.
Publication year - 1954
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.1478-4408.1954.tb02019.x
Subject(s) - homolysis , chemistry , thiol , radical , polymerization , photochemistry , wool , reactivity (psychology) , cystine , polymer chemistry , methacrylic acid , cysteine , polymer , organic chemistry , materials science , enzyme , medicine , alternative medicine , pathology , composite material
On exposure to diffuse light, stringently de‐aerated solutions containing methacrylic acid and sulphuric acid undergo polymerisation in a few hours at 25°c, in presence of ethyl disulphide, cystine, or intact wool, but not in their absence. The disulphides (including wool) are ineffective in the dark, and it is concluded that polymerisation is initiated by the thiol radicals which are produced by homolytic fission of the disulphide bonds under the influence of light‐R.S.S.R ‐ 2 R.S.