Abstract
THE depilation of hides and skins prior to tannage1, and the permanent setting of stretched hair and wool2 are both important industrial processes considered to be governed by the development of resistant cross-linkages between the peptide chains of keratins. Speakman2 has suggested that when stretched wool fibres are set in steam, the cross-linkages developed consist of –S–NH– groupings formed subsequent to the hydrolysis (R.S.S.R.⇄ R.SH+HOS.R) of the cystine disulphide cross-linkages ; but it is admitted that other resistant linkages must be formed when cross-linking is attended by loss of sulphur.
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References
Marriott, J. Int. Soc. Leather Trades Chemists, 12, 216 (1928).
Speakman, NATURE, 132, 930 (1933).
Schöberl, Annalen, 507, 111 (1934); Ber., 67B, 1545 (1934).
Harris, Bur. Stand. J. Res., 15, 63 (1935).
McLaughlin, Highberger and Moore, J. Amer. Leather Chem. Assoc., 22, 345 (1927).
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PHILLIPS, H. Cross-Linkage Formation in Keratins. Nature 138, 121–122 (1936). https://doi.org/10.1038/138121b0
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DOI: https://doi.org/10.1038/138121b0
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