Author: Kobelnik Marcelo Cassimiro Douglas Ribeiro Clóvis Dias Diógenes Crespi Marisa
Publisher: Springer Publishing Company
ISSN: 1388-6150
Source: Journal of Thermal Analysis and Calorimetry, Vol.102, Iss.3, 2010-12, pp. : 1167-1173
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Abstract
The Ca–diclofenac compound was prepared. Thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), X-ray diffraction powder patterns, and microscopy analysis were used to characterize this compound. Details concerning the stages of dehydration, transition phase, and thermal decomposition as well as data of the kinetic parameters of these stages have been described here. The kinetic study of these stages was evaluated from several heating rates with a sample mass of 2 and 5 mg in open crucibles under nitrogen atmosphere. The obtained data were evaluated with the isoconversional kinetic method, where the value of activation energy (
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