Pastre, I. A.Oliveria, I. D.Moitinho, ABSde Souza, G. R.Ionashiro, E. Y.Fertonani, F. L.2014-05-202014-05-202004-01-01Journal of Thermal Analysis and Calorimetry. Dordrecht: Kluwer Academic Publ, v. 75, n. 2, p. 661-669, 2004.1388-6150http://hdl.handle.net/11449/34873The composite montmorillonite-8-hydroxyquinoline (Swy-1-8-HQ) was prepared by two different processes and studied by using thermogravimetric analysis (TG/DTG and DSC), as well as helpful techniques as fluorescence in the UV-visible region and X-ray diffraction. The composites developed fluorescent appearance, however with quantum poor efficiency and they exhibited distinct TG and DSC thermal behavior. The fluorescence data of spectra associated to the TG/DT curves allowed to suggest that the 8-HQ was present in the composites in two different circumstances: 1 - intercalated in the interlayer spaces (Swy-1-8-HQ2), rigidly associated to the Substrate feasible as a monolayer with the aromatic rings parallel to the silica layer; and/or, 2 - adsorbed on the Surface (Swy-1-8-HQ1), either as a bilayer formation or tilting of the molecules to the silicate layer sheet. All results confirmed above are in agreement with X-ray diffraction patterns, once the interlayer space increases when 8-HQ is incorporated. The experimental results confirm the formation of the composites in agreement with the method used in the preparation.661-669engDSCmontmorilloniteoxineTG/DTGX-ray diffractionArtigo10.1023/B:JTAN.0000027160.19388.0cWOS:000189377000038Acesso restrito