Duki, A., Antunes, A. P. M., Covington, A. D. and Guthrie-Strachan, J. (2013) The stability of metal-tanned and semi-metal tanned collagen. Paper presented to: XXXII Congress of the International Union of Leather Technologists and Chemists Societies (IULTCS), Istanbul, Turkey, 29-31 May 2013. (Unpublished)
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Abstract:
The metal tanning and semi-metal tanning potency of the first row transition metals was studied using hide powder. Transition metals show different levels of synergistic hydrothermal stabilisation in semi-metal tanning. Measurement of hydrothermal stability was carried out regularly in order to monitor the stability and permanence of tanning interactions in metal tanned and semi-metal tanned leathers.
The results indicate that the physico-chemical properties of leather can be altered as a result of redox interactions, in which certain transition metals play the role of a catalyst. The extent of metal catalysed oxidative degradation of leather can proceed to the extent of complete destruction of the tanning matrix as well as the collagen itself. A proposed mechanism of metal catalysed autodegradation in semi-vanadium (IV) leather is discussed with regard to experimental results and a review of earlier research on the interaction of vanadium salts with phenolic compounds.
Subjects:
Creators:
Duki, A., Antunes, A. P. M., Covington, A. D. and Guthrie-Strachan, J.
Faculties, Divisions and Institutes:
Date:
29 May 2013
Date Type:
Presentation
Event Title:
XXXII Congress of the International Union of Leather Technologists and Chemists Societies (IULTCS)
Event Dates:
29-31 May 2013
Event Location:
Istanbul, Turkey
Event Type:
Conference
Language:
English
Status:
Unpublished
Refereed:
No
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