Enhancing CO2 permeation features of PEBAX-based membrane via incorporating MgO nanoparticles in its polymeric matrix

A novel ternary mixed‐matrix membrane comprising Pebax‐1657, [HMIM][NTf2] IL, and Al2O3 nanoparticles for efficient CO2 separation

“…Finally, the acquired uniform films were removed from the Petri dishes and dried under vacuum for extra 6 h at the mentioned temperature to eliminate the residual DMF from their structures. 44 For fabricating the blend membranes (BMs) through the solution-casting method, the specified amounts of Pebax-1657 pellets were dissolved in DMF solvent under constant stirring and reflux conditions for 5 h at 115 C. After preparing a transparent polymer solution (2.5 wt.%), different amounts of [HMIM][NTf 2 ] IL with a purity of 98% (5-20 wt.% of Pebax) were poured into the polymeric solution and stirred for 3 h at 115 C. Afterward, the same casting and drying approach was followed, as explained in the above paragraph.…”

“…These findings are consistent with related studies. 44,50,51 The effect of embedding Al 2 O 3 in the polymeric matrix can be found by comparing the IR spectrums of the neat polymeric membrane and binary MMM embedded with 6 wt.% of Al 2 O 3 . Figure 1d shows that the intensity of the PA part's characteristic peaks is reduced after adding the nanofillers to the polymer structure.…”

“…As a result, the CO 2 permeability, which is the multiplication of the gas diffusivity and solubility, grows. 44 However, the permeation rates of non-polar gases remain constant or slightly improve with increasing the operating pressure. It can result from the simultaneous impacts of the driving force increase and the prepared membrane's FFV decrease.…”

Holmium-Containing Metal-Organic Frameworks as Modifiers for PEBA-Based Membranes

“…These polymers have a number of properties, such as flexibility, chemical resistance and strength, that make them promising for use in membrane technologies [ 54 , 55 , 56 ]. Recently, a number of studies have been carried out on the use of mixed matrix membranes based on PEBA not only for the separation of gases [ 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 ] but also for the extraction of various biofuel components [ 67 , 68 ], alcohols [ 69 , 70 ], desulphurization [ 71 ], alcohol dehydration [ 72 ], esterification [ 73 ] and pervaporation [ 74 , 75 ]. The high degree of combinatoriality in the preparation of block copolymers makes it possible to obtain a large number of commercially available polymers with different compositions and properties [ 76 ].…”