THE MECHANISM OF SORPTION OF Ag+ IONS ON CHITOSAN MICROGRANULES: IR AND NMR STUDIES
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2009, Vol 0, Issue
Abstract
The method IR and NMR have been used to study the structure of chitosan microgranules chelated by Ag+ ions. The change of the structure was confirmed by XRD diffractograms which illustrated the crystalline structure. Analysis of the IR and NMR spectra confirmed major participation of NH2 and OH groups in attachment of Ag+ ions to a chitosan molecule which indicates in the same time changes occurring at glycosidic bonds during the process. After adsorption of Ag+ ions, the crystalline structure changes. Certain ordering of the structure in the amorphous part is observed.
Authors and Affiliations
Zofia Modrzejewska, Małgorzata Dorabialska, Roman Zarzycki, Anna Wojtasz-Pająk
Keywords
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