Antioxidants loss kinetics in polyethylene exposed to model ethanol based biofuels
TypeArticles dans des revues avec comité de lecture
This work deals with a study of stabilizers loss by extraction in ethanol–cyclohexane mixtures simulating ethanol based biofuels. As theoretically predicted, cyclohexane has an extractive power considerably stronger than ethanol one and its effect predominates, even in fuels containing 50% ethanol. Antioxidant depletion displays first-order kinetics indicating that loss kinetics are extraction rather than diffusion controlled.
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New insights in polymer-biofuels interaction Avancées dans la compréhension des interactions polymères-biocarburants RICHAUD, Emmanuel; DJOUANI, Fatma; FAYOLLE, Bruno; VERDU, Jacques; FLACONNECHE, Bruno (Institut Français du Pétrole, 2015)This paper deals with polymer-fuel interaction focusing on specific effects of biofuels on polyethylene (PE) in automotive applications. The practical objective is to develop a predictable approach for durability of ...
DJOUANI, Fatma; RICHAUD, Emmanuel; FAYOLLE, Bruno; VERDU, Jacques (Elsevier, 2011)The thermal oxidation behaviour of polyethylene films stabilized by various weight ratios of organophosphites (Irgafos 168) has been studied at selected temperatures. The duration of the induction period was found to ...
DJOUANI, Fatma; ZAHRA, Yahya; FAYOLLE, Bruno; KUNTZ, M; VERDU, Jacques (ELSEVIER, 2014)Epoxy networks based on Diglycidyl ether of bisphenol A (DGEBA) and cured with Jeffamines (POPA) or polyamidoamine (PAA) were gamma irradiated at 25 1C in air. Dose rates of 50, 200 or 2000 Gy h- 1 for doses up 100 kGy ...
ZAHRA, Yahya; DJOUANI, Fatma; FAYOLLE, Bruno; KUNTZ, M; VERDU, Jacques (ELSEVIER, 2014)tThe thermo-oxidative behavior of unformulated (unfilled) samples of epoxy coatings has been studiedat five temperatures ranging from 70◦C to 150◦C. Two epoxy networks based on diglycidyl ether ofbisphenol A (DGEBA), ...
RICHAUD, Emmanuel; AUDOUIN, Ludmila; FAYOLLE, Bruno; VERDU, Jacques; MATISOVÁ-RYCHLÁ, Lyda; RYCHLY, Jozef (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. ...