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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Thermal behavior of the highly luminescent poly(3-hydroxybutyrate):Eu(tta)(3)(H2O)(2) red-emissive complex

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Parra, D. F. [1, 2] ; Forster, P. L. [1, 2] ; Lyszczek, R. [3] ; Ostasz, A. [3] ; Lugao, A. B. [2, 1] ; Rzaczynska, Z. [3]
Total Authors: 6
[1] Natl Nucl Energy Commiss, Chem & Environm Ctr, Energy & Nucl Res Inst, BR-05508000 Sao Paulo - Brazil
[2] IPEN CNEN SP, BR-05508000 Sao Paulo - Brazil
[3] Marie Curie Sklodowska Univ, Dept Gen & Coordinat Chem, Fac Chem, PL-20031 Lublin - Poland
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 114, n. 3, p. 1049-1056, DEC 2013.
Web of Science Citations: 11

The aim of this study has been to gain a fundamental understanding of the mechanisms governing thermal degradation of luminescent poly(3-hydroxybutyrate) (PHB). PHB was doped with diaquatris(thenoyltrifluoroacetonate) europium(III) complex, {[}Eu(tta)(3)(H2O)(2)], and different luminescent systems were obtained. The thermal-stability of the luminescent films was discussed and the products of decomposition were analyzed. Thermal degradation of PHB:Eu(tta)(3) x % systems (x = 0, 1, 5, 10, and 15 %) was elucidated by means of thermogravimetric analysis (TG), the thermal-stability decreases with the increase of europium complex concentration. The PHB polymer decomposed with evolution of carbon dioxide and 2-butenoic acid molecules. The TG-FTIR results, of the gaseous degradation products of PHB in nitrogen atmosphere, indicated that the polymer is stable at temperatures up to 200 A degrees C. Polymer matrix at concentrations above 5 % decomposed with evolution of water molecules among the other gaseous products, which implied the presence of a hydrated complex in the system. The luminescent films showed more flexibility due to a loss in crystallinity, which suggested a potential usefulness in technical applications. (AU)

FAPESP's process: 12/00236-1 - Study and the synthesis of optical markers containing rare earth and aplication in Polymer Processing
Grantee:Duclerc Fernandes Parra
Support type: Regular Research Grants