Reactions of antioxidants with molecular oxygen. Part I. 2,2′-methylene-bis(4-methyl-6-tert-butylphenol) in silicone matrix
Article dans une revue avec comité de lecture
Auteur
NAVARRO, R.AUDOUIN, LudmilaVERDU, JacquesRésumé
The reaction of 2,2′-methylene-bis(4-methyl-6-tert-butylphenol) stabiliser with oxygen was studied in an inert substrate at 80-120°C temperature under 0.02-3.0 MPa oxygen pressure ranges. UV/VIS spectrophotometry and Gel Permeation Chromatography were used to follow the antioxidant consumption and the formation of oxidation products. A simplified mechanistic model of stabiliser oxidative transformation was proposed and corresponding kinetic parameters were determined and compared with the kinetic values obtained by other authors.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lecture; ; ;
COLIN, Xavier; RICHAUD, Emmanuel (Wiley, 2011)
The radiochemical degradation of bisphenol A polysulfone was investigated under a γ-ray dose rate of 24 kGy h-1 up to 30.7 MGy total absorbed dose at 60 °C using gel permeation chromatography, sol-gel analysis, glass ... -
Article dans une revue avec comité de lecture; ; ; ;COLIN, Xavier; RICHAUD, Emmanuel (Elsevier, 2010)
Thin (60 μm) and thick (250 μm) samples of poly(ether ether ketone) were subjected to radiochemical ageing at 24 kGy h -1 dose rate for doses up to 30.7 MGy at 60 °C in air. FTIR spectrophotometry (hydroxyl and carbonyl ...
-
Chapitre d'ouvrage scientifique; ;FAYOLLE, Bruno; COLIN, Xavier; RICHAUD, Emmanuel (In Tech, 2012)
Polymers having an aromatic backbone polymers have a high mechanical strength and a high modulus. Their aromaticity increases their resistance for use in relatively severe conditions especially in aerospace and nuclear ...
-
Article dans une revue avec comité de lecture; ;FAYOLLE, Bruno; COLIN, Xavier; RICHAUD, Emmanuel (EDP Sciences, 2010)
It has been supposed, for a long time, that kinetic modelling of polymer ageing for nonempirical lifetime prediction was out of reach for two main reasons: hypercomplexity of mechanisms and heterogeneity of reactions. The ...
-
Article dans une revue avec comité de lecture(Elsevier, 2011)The oxidation of five different phenolic antioxidants in inert substrates has been investigated varying the temperature and oxygen pressure conditions. The stabiliser consumption in this reaction has been quantified by ...