Authors: T Vlase Gabriela Vlase Dorina Modra N Doca
Publish Date: 2007/05/15
Volume: 88, Issue: 2, Pages: 389-393
Abstract
Thermal behavior of four food dyes ie tartrazine crysoine azorubine and amarant was studied under nonisothermal conditions in dynamic air atmosphere and at heating rates of 5 10 15 and 20°C min–1 The TG data were correlated to the FTIR spectra of each sample before and after the thermal decomposition Kinetic study by processing the TG data was performed The main conclusion of this study is that the nonparametric kinetic method allows a separation of the steps of a complex process and that the values of the activation energy obtained by this method agree satisfactory with that of Flynn–Wall–Ozawa estimation
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