Polimery 1993, No 6, 253
IR spectrometry is often applied to determine the deacetylation degree (DD) of chitosan. It can be noticed, however, that results obtained in this way differ from those of titrimetry. Titrimetry is considered to be the least charged with errors. Factors affecting the value of the spectrometric DD of chitosan were analyzed. It was found that good agreement between potentiometrie titration and IR spectrometry data can be obtained provided that Miya's et al.  procedure is followed and that fixed conditions of sample preparation, recording of spectra and their mathematical treatment are observed.
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