Naslov
Application of FT-infrared srectroscopy to the study of structural changes of leather during tannery processing

Autori
Bajza, Željko ; Posarić, Juraj. ; Sugnetić, Nevenka

Izvornik
Journal of the Society of Leather Technologists and Chemists (0144-0322) 81 (1997); 219-223

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Leather; IR Spectroscopy

Sažetak
During manufacture the structure and properties of rawhide are changed by the addition of auxiliaries. Efficient control of these processes requires difficult analitycal work. In this work, the FTIR-spectroscopy by attenuated total reflection (ATR) was used to analyse the changes in the natural matrix of the raw cow hide during tanning and finishing. To obtain reliable results and to minimise errors caused by the inhomogenity of samples, five pairs of samples were cut from the treated hide after every step of the process. Because of result scatter spectrum averaging was used to process the results. The averaged spectra were subtracted either from the spectrum of a raw hide (standard), or from the spectrum of the sample prepared in an earlier stage. The differential table obtained was correlated to known data. It was possible from the spectra (except for that of limed hide) to determine changes in constitution of the hide as wellas constituents added to the collagen matrix. Adsorption bands of carbonyls, sulphate anion, sulphonates, silicones and nitro-compaunds, as wellas the C-H bending of the alkyl chains of added auxiliaries allow identification of the process step and determination of the content of added agents, as well. The simplicity of the method and results obtained make it very useful as a method for QC and QA in tanning processes.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA