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- W1497290319 abstract "L'étude de l'oxydation du polyéthylène basse densité a été entreprise en lit fluidisé par un mélange d'air et d'ozone. Une attention particulière est portée sur la formation de péroxydes et d'hydropéroxydes durant cette réaction. Ainsi, nous optimisons leur obtention en fonction des différents paramètres (température, temps, quantité d'ozone, débit du courant gazeux), à l'aide d'un plan d'expérience. Nous adaptons une méthode basée sur l'utilisation du diphényl picryl hydrazyle pour le dosage des péroxydes et hydropéroxydes ainsi formés. Une corrélation entre le taux de carbonyle (R 1 ) déterminé par analyse infrarouge et le taux en péroxydes a étéétablie. The study of the oxidation of low density polyethylene is carried out under fluidized conditions in air and ozone. Special attention is paid to the formation of peroxides and hydroperoxides. Their production is optimized according to various parameters (temperature, time, quantity of ozone, flow of the gaseous current) using an experimental design method. Peroxides and hydroperoxides are titrated by a colorimetric method using diphenylpicrylhydrazyl as reagent. A correlation between i.r. carbonyl ratio and the yield of peroxides has been established." @default.
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- W1497290319 date "1984-01-01" @default.
- W1497290319 modified "2023-10-16" @default.
- W1497290319 title "Matériaux composites à base de graves et de liants polymères II" @default.
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- W1497290319 doi "https://doi.org/10.1016/0014-3057(84)90166-6" @default.
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