Thèse soutenue publiquement le 29 mai 2024 devant le jury composé de :
M Fabrice GOUANVE, Maître de Conférences HDR, Université Claude Bernard Lyon 1 – Rapporteur
M Anthony SZYMCZYK, Professeur des Universités, Université de Rennes – Rapporteur
Mme Géraldine GOUHIER, Professeur des Universités, Université de Rouen Normandie – Examinateur
M Cédric PLESSE, Professeur des Universités, CY Cergy Paris Université – Examinateur
M Nicolas DESILLES, Maître de Conférences HDR, INSA Rouen Normandie – Directeur de thèse
Mme Kateryna FATYEYEVA, Maître de Conférences HDR, Université de Rouen Normandie – Co-Directeur de thèse
Résumé :
Currently, the emission of CO2, which is the primary contributor to global warming, is increasing at an alarming rate. Consequently, there is a growing global need for cutting-edge technologies that can effectively separate and capture CO2. In the present work, a series of PSF/IL and PES/IL composite membranes for CO2 separation were investigated. Six ILs ([Meim][TFSO3], [Vim][TFSO3], [Meim][Tf2N], [Vim][Tf2N], Li(DOBA)[Tf2N] and Li(HDA)[Tf2N]) were synthesized successfully and characterized by FT-IR, 1H NMR, TGA and DSC. Composite membranes with different IL loadings were fabricated by solution casting method and exhaustively studied by FT-IR, TGA, DSC, SEM, F-mapping, surface energy, tensile tests, and gas permeation (CO2, N2 and O2). Under 25°C and 4 bar, PES/10[Vim][Tf2N] membrane showed a CO2 permeability of 1.92 Barrer with improved CO2/N2 and CO2/O2 selectivities of 20.4 and 6.1, respectively.
