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Closed Access item A kinetic study on the thermal behaviour of chitosan

Authors:López Gómez, Félix Antonio
Mercê, A. L. R.
Alguacil, Francisco José
López-Delgado, Aurora
Keywords:Chitosan, Isoconversional analysis, Kinetic, Thermal degradation
Issue Date:2008
Citation:Journal of Thermal Analysis and Calorimetry 91 (2) : 633-639 (2008)
Abstract:Abstract The thermal behaviour of chitosan was studied by means of thermogravimetry, mass spectrometry and infrared spectrometry. Kinetic parameters were obtained by advanced kinetic evaluation (differential isoconversional analysis) from DSC curves, in non-isothermal conditions, at several heating rates, between 5 and 30°C min−1. The results showed that the decomposition of chitosan does not follow a single mechanism because both the activation energy and the pre-exponential factor are not constant during the course of the reaction. A comparison with the results obtained by applying different conventional calculating methods is also shown.
Publisher version (URL):http://dx.doi.org/10.1007/s10973-007-8321-3
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