Title :

THERMAL DECOMPOSITION OF FLAME RETARDED FORMULATIONS PA6/ALUMINUM PHOSPHINATE/MELAMINE POLYPHOSPHATE/ORGANOMODIFIED CLAY: INTERACTIONS BETWEEN THE CONSTITUENTS?

Author(s) :

Samyn, Fabienne [Auteur]
174496|||Unité Matériaux et Transformations - UMR 8207 [UMET]
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Journal title :

Polymer Degradation and Stability

Volume number :

97

Pages :

2217-2230

Publication date :

2012

HAL domain(s) :

Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

The aim of this article is to investigate the thermal decomposition in pyrolytic and oxidative conditions ofa phosphorous flame retardant (combination of melamine polyphosphate and aluminum phosphinate: AlPi-MPP) alone as ...
Show more >The aim of this article is to investigate the thermal decomposition in pyrolytic and oxidative conditions ofa phosphorous flame retardant (combination of melamine polyphosphate and aluminum phosphinate: AlPi-MPP) alone as well as in combination with an organo-modified clay (o-MMT) and of polyamide 6 formulations containing these additives. The gases evolved during the decomposition have been analyzed using TGA-FTIR. A detailed condensed phase study has been carried out combining X-ray diffraction (XRD) analyses and 27Al, 31P and 13C solid-state nuclear magnetic resonance (NMR) measurements on samples heat treated at different characteristic temperatures. It is demonstrated that no reaction leading to the formation of new species between the additives or the additives and the matrix occurs. However, Lewis acid/base interactions are highlighted resulting in the catalytic decomposition of the components particularly under nitrogen. Under air, the combined action of oxygen and Lewis interactions leads to an even more catalyzed decomposition process. Mechanisms of thermal decomposition are proposed.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2019-05-16T15:31:02Z
2023-01-03T13:30:42Z