| Texto completo | |
| Autor(es): |
Galico, D. A.
;
Nova, C. V.
;
Bannach, G.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 128, n. 1, p. 611-614, APR 2017. |
| Citações Web of Science: | 1 |
| Resumo | |
A new polymorphic form of the synthetic antioxidant propyl gallate was obtained by the recrystallization of the compound in acetone. The new form was characterized by thermogravimetry, differential scanning calorimetry, X-ray powder diffractometry, and near- and middle-infrared region spectroscopy. While the commercial form of propyl gallate starts to melt at 145 A degrees C with the maximum temperature of the peak at 150 A degrees C, the recrystallized form starts to melt at 140 A degrees C with the maximum temperature of the peak at 148.8 A degrees C. The two forms differ much in the X-ray powder diffractograms pattern, confirming the change in the long-distance interactions in both forms but the near- and middle-infrared region spectroscopy shows that no difference occurs in the inter- and intramolecular interactions. (AU) | |
| Processo FAPESP: | 12/21450-1 - Estudos termoanalíticos, síntese e caracterização dos co-cristais sólidos de cetoprofeno com alguns co-formadores |
| Beneficiário: | Gilbert Bannach |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 13/09022-7 - Estudos termoanalíticos, síntese e caracterização dos co-cristais sólidos de alguns antibióticos (fluoroquinolonas) com alguns co-formadores |
| Beneficiário: | Massao Ionashiro |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |