Polymer-clay nanocomposites thermal stability: experimental evidence of the radical trapping effect
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Data
2013-01-01
Autores
Carvalho, Hudson W. P. [UNESP]
Santilli, Celso Valentim [UNESP]
Briois, Valerie
Pulcinelli, Sandra Helena [UNESP]
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Royal Soc Chemistry
Resumo
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.
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Rsc Advances. Cambridge: Royal Soc Chemistry, v. 3, n. 45, p. 22830-22833, 2013.