Otro
Polymer-clay nanocomposites thermal stability: experimental evidence of the radical trapping effect
Registro en:
Rsc Advances. Cambridge: Royal Soc Chemistry, v. 3, n. 45, p. 22830-22833, 2013.
2046-2069
10.1039/c3ra44388d
WOS:000326395800009
Autor
Carvalho, Hudson W. P.
Santilli, Celso Valentim
Briois, Valerie
Pulcinelli, Sandra Helena
Resumen
The radical trapping flame retardant mechanism of polymer-clay nanocomposites is frequently claimed to be responsible for improving the thermal stability of polymers. However it had never been demonstrated. Herein using in situ time-resolved X-ray Absorption Spectroscopy (XAS) we present experimental evidence that Fe3+ embedded in the clay can act as electron acceptors during polymer thermal decomposition. Therefore it contributes to improve the polymer thermal stability. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)