Kobelnik, Marcelo [UNESP]Quarcioni, Valdecir ÂngeloRibeiro, Clovis Augusto [UNESP]Capela, Jorge Manuel Vieira [UNESP]Dias, Diogines dos Santos [UNESP]Crespi, Marisa Spirandeli [UNESP]2015-05-152015-05-152010Journal of the Chinese Chemical Society, v. 57, n. 3A, p. 384-390, 2010.0009-4536http://hdl.handle.net/11449/123495The dehydration, thermal decomposition and transition phase stage of Zn(II)-diclofenac compoundwere studied by simultaneous TG-DTA and DSC techniques. The TG and DSC curves of this compoundwere obtained with the mass of sample of 2 and 5 mg. Additionally, DSC curves were carried out inopened and closed a-alumina pans under static and nitrogen atmosphere. The DTA and DSC curves showthat this compound possesses exothermic transition phase between 170-180 ºC, which it is irreversible(monotropic reaction). The kinetics study of this transition phase stage was evaluated by DSC undernon-isothermal conditions. The obtained data were evaluated with the isoconversional method, where thevalues of activation energy (Ea/kJmol-1) was plotted in function of the conversion degree (a). The resultsshow that due to mass sample, different activation energies were obtained. From these curves a tendencycan be seen where the plots maintain the same profile for closed lids and almost run parallel to each other.384-390engZn(II)-diclofenac complexThermal behaviorTransition phaseKineticArtigo10.1002/jccs.201000057Acesso restrito84983108918100828087755201222731445797324655364274713101139991400000-0002-7984-5908