, Volume 28, Issue 1, pp 189-193

Determination of the degree of acetylation of chitin and chitosan by thermal analysis

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Abstract

Several methods for the rapid determination of the degree of acetylation of chitin and related polymers have been evaluated, including the use of the infrared and the mass spectra.

Chitin and chitosan have characteristic degradation temperatures and it is possible to determine the acetylation degree by the use of empirical correlations based on the weight losses associated with the main decomposition peaks.