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
Date
2011Journal
Polymer Degradation and StabilityAbstract
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.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureNAVARRO, R.; AUDOUIN, Ludmila; VERDU, Jacques (Elsevier, 2011)The study of oxidation kinetics of isooctyl-3-(3,5-di-tert-butyl-4- hydroxyphenyl)propionate (Irganox 1135) stabiliser was carried out using silicone oil as an inert substrate. The stabiliser was exposed at 80-120 °C under ...
-
Article dans une revue avec comité de lectureNAVARRO, R.; AUDOUIN, Ludmila; VERDU, Jacques (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 ...
-
Article dans une revue avec comité de lectureAUDOUIN, Ludmila; VERDU, Jacques; MATISOVÁ-RYCHLÁ, Lyda; RYCHLY, Jozef; FAYOLLE, Bruno; RICHAUD, Emmanuel (Elsevier, 2012)This study deals with oxidation kinetics of three unsaturated fatty esters: methyl oleate, methyl linoleate and methyl linolenate at temperatures ranging from 90 to 150 °C. The reaction was monitored by chemiluminescence. ...
-
Article dans une revue avec comité de lectureAUDOUIN, Ludmila; VERDU, Jacques; 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 lectureMONCHY-LEROY, Carole; AUDOUIN, Ludmila; VERDU, Jacques; 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 ...