| Revista: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312882 |
| ISSN: | 1516-1439 |
| Autores: | Sales, Rita de Cassia Mendonca1 Brunelli, Deborah Dibbern |
| Instituciones: | 1Instituto Tecnologico de Aeronautica, Departamento de Quimica, Sao Jose dos Campos, Sao Paulo. Brasil |
| Año: | 2005 |
| Periodo: | Jul-Sep |
| Volumen: | 8 |
| Número: | 3 |
| Paginación: | 299-304 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | This work involved the application of luminescence spectroscopy under steady-state conditions to study the curing process of the epoxy resin diglycidyl-ether of bisphenol-A (DGEBA) using the curing agents 4,4'-diaminodiphenylmethane (DDM) and 4,4'-diaminodiphenylsulfone (DDS). Two fluorescence methods were employed: the intrinsic method related to the polymeric matrix and the extrinsic method, using the molecular probe 9-anthroic acid (9-AA). Stoichiometric mixtures, with and without 9-AA, were heated to 120 °C at a 5 °C/min heating rate. These samples were then cured at 120 °C for a further 2 hours and allowed to cool to room temperature for 20 minutes. The results obtained by the two methods indicate that the cross-linking reaction can be monitored by analyzing the spectral changes of the emission bands of DGEBA, curing agents and 9-AA |
| Disciplinas: | Ingeniería, Química, Física y astronomía |
| Palabras clave: | Ingeniería de materiales, Química de polímeros, Química industrial, Física atómica y molecular, Resinas epóxicas, Tratamiento térmico, Espectroscopía, Luminiscencia |
| Keyword: | Engineering, Chemistry, Physics and astronomy, Materials engineering, Industrial chemistry, Polymer chemistry, Atomic and molecular physics, Epoxy resins, Thermal treatment, Spectroscopy, Luminescence |
| Texto completo: | Texto completo (Ver HTML) |
