On the CO 2 sorption and swelling of elastomers by supercritical CO 2 as studied by in situ high pressure FTIR microscopy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Supercritical Fluids Année : 2018

On the CO 2 sorption and swelling of elastomers by supercritical CO 2 as studied by in situ high pressure FTIR microscopy

Résumé

An FTIR (Fourier Transform InfraRed) microscope combined to a high pressure cell has been used to determine the CO2 uptake in several common elastomers. Both the CO2 sorption and the resulting swelling of the elastomers have been determined as function of pressure (P = 5–15 MPa) at constant temperature (T = 50 °C). A significant quantity of CO2 is sorbed in all studied elastomers, between 15 and 20% at T = 50 °C and P = 15 MPa for most elastomers and up to 30% for Ethylene Vinylacetate (EVM) in the same conditions. The resulting percentage of swelling of the majority of studied elastomers is significant (up to 30%), and varies quite proportionally with the CO2 mass uptake (linear variation with a slope equal to 1). The effect of temperature has been studied for Ethylene Propylene Diene (EPDM), between T = 50 °C and T = 110 °C (P = 5–15 MPa) and demonstrate that the swelling and CO2 sorption display only a weak variation in this temperature range.
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Dates et versions

hal-01622206 , version 1 (18-11-2019)

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Julie Dubois, Etienne Grau, Thierry Tassaing, Michel Dumon. On the CO 2 sorption and swelling of elastomers by supercritical CO 2 as studied by in situ high pressure FTIR microscopy. Journal of Supercritical Fluids, 2018, 131, pp.150 - 156. ⟨10.1016/j.supflu.2017.09.003⟩. ⟨hal-01622206⟩
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