Northampton Electronic Collection of Theses and Research

Extended X-ray absorption fine structure studies of the role of chromium in leather tanning

Covington, A. D., Lampard, G. S., Menderes, O., Chadwick, A. V., Rafeletos, G. and O'Brien, P. (2001) Extended X-ray absorption fine structure studies of the role of chromium in leather tanning. Polyhedron. 20(5), pp. 461-466. 0277-5387.

Item Type: Article
Abstract: Extended X-ray absorption fine structure (EXAFS) spectroscopy has been used to study basic chromium(III) sulphate salts as used for tanning collagen and samples of leathers tanned with such salts. The baths containing the leathers were adjusted to a solution pH of 4 by the addition of sodium carbonate at the end of the tanning reaction mimicking the way the process is conducted industrially. In the experimental leather samples, linear tetrameric chromium species appear to predominate with the collagen matrix. The chromium atoms are surrounded, on average by six nearest neighbour oxygen atoms, two chromium atoms are the next nearest neighbours and there are approximately six oxygen atoms in the next coordination sphere; the latter at the limits of experimental determination by EXAFS
Uncontrolled Keywords: Extended X-ray absorption fine structure; Leather; Chromium(III); Tanning
Subjects: T Technology > TS Manufactures > TS967 Chemistry and science of leather
T Technology > TS Manufactures > TS965 Leather technology > TS965.5 Tanning
Creators: Covington, Anthony D, Lampard, G S, Menderes, O, Chadwick, A V, Rafeletos, G and O'Brien, P
Publisher: Elsevier
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > School of Applied Sciences (to 2009) > Leather Technology (to 2009)
Date: 1 March 2001
Date Type: Publication
Page Range: pp. 461-466
Journal or Publication Title: Polyhedron
Volume: 20
Number: 5
Language: English
ISSN: 0277-5387
Status: Published / Disseminated
Refereed: Yes
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