Literature DB >> 25011040

Determination of N-acetylation degree in chitosan using Raman spectroscopy.

A Zając1, J Hanuza2, M Wandas1, L Dymińska3.   

Abstract

Application of Raman spectroscopy in determination of the acetylation degree (DA) of chitosan has been developed. The spectra of several chitosan samples characterized by different DD (degree of deacetylation) in the range 50-100% have been measured. The integral intensities of the bands assigned to the vibrations of amine group and glucosidic ring were used to calculate the DA from the intensity ratio. The assignment of the bands to the respective normal modes of chitosan was based on the DFT quantum chemical calculations. This method has a number of advantages over other techniques. It is fast and does not require purification of the sample nor require dissolution of the chitosan in any solvent.
Copyright © 2014 Elsevier B.V. All rights reserved.

Entities:  

Keywords:  Chitosan; Deacetylation degree; IR spectroscopy; Quantum chemical calculations; Raman spectroscopy

Mesh：

Substances：

Year:  2014        PMID： 25011040     DOI： 10.1016/j.saa.2014.06.071

Source DB:  PubMed          Journal:  Spectrochim Acta A Mol Biomol Spectrosc        ISSN： 1386-1425            Impact factor:   4.098


  26 in total

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