Comparison of acidic and basic ionic liquids effects on dispersion of alumina particles in Pebax composite membranes for CO2/N2 separation: Experimental study and molecular simulation

Kojabad, Mahdi Elyasi; Babaluo, Ali Akbar; Tavakoli, Akram; Sofla, Reza Lotfi Mayan; Kahnamouei, Haniyeh Golizadeh

doi:10.1016/j.jece.2021.106116

Cited by 14 publications

(6 citation statements)

References 65 publications

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“…In a few cases (SiO 2 [ 17 ], γ-Al 2 O 3 particles modified with ILs [ 32 ], CNTs NF, and GO NF [ 38 ]), the thermal analysis showed a reduction in Tg , indicating the generation of a repulsive interaction and the enhancement of the chain flexibility of Pebax. The decreased Tg led to more permeable membranes.…”

Section: Main Issues In Mmms Developmentmentioning

confidence: 99%

“…More recently, ILs were introduced in the Pebax MMMs to decorate the fillers before their dispersion within the polymer [ 50 , 86 , 93 ]. Acidic and basic ILs applied to modify the γ-Al 2 O 3 particles avoided the sedimentation and agglomeration of the fillers through electrostatic and steric forces [ 32 ]. The acidic IL had a better effect on the particle dispersion than the basic IL.…”

Section: Gas Separation Performancementioning

confidence: 99%

“…On the other hand, nanoparticles of aluminum oxide (Al 2 O 3 ) at up to 8 wt% [31] provided better results in terms of gas separation performance than SiO 2 and TiO 2 nanoparticles [13]. In another study, acidic and basic Ionic Liquids (ILs) were used to modify γ-Al 2 O 3 particles to improve the filler dispersion in Pebax [32]. Finally, Fe 2 O 3 nanoparticles were successfully dispersed within the polymer matrix (at up to 2 wt% polymer) using a magnetic field of 0.3 T to align the nanofillers [33].…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

“…In addition, a non-uniform filler dispersion negatively influences the membrane performance. The higher density of some particles, with respect to the polymer (e.g., ρ = 3.65 g/cm 3 for Al 2 O 3 and ρ = 1.14 g/cm 3 for Pebax matrix), causes their sedimentation during the casting procedure [32]. Channeling is a consequence of the non-uniform distribution within the host matrix and agglomeration among the particles.…”

Section: Defects-causes and Countermeasuresmentioning

confidence: 99%

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A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Clarizia

Bernardo

2021

Polymers

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An inspiring challenge for membrane scientists is to exceed the current materials’ performance while keeping the intrinsic processability of the polymers. Nanocomposites, as mixed-matrix membranes, represent a practicable response to this strongly felt need, since they combine the superior properties of inorganic fillers with the easy handling of the polymers. In the global strategy of containing the greenhouse effect by pursuing a model of sustainable growth, separations involving CO2 are some of the most pressing topics due to their implications in flue gas emission and natural gas upgrading. For this purpose, Pebax copolymers are being actively studied by virtue of a macromolecular structure that comprises specific groups that are capable of interacting with CO2, facilitating its transport with respect to other gas species. Interestingly, these copolymers show a high versatility in the incorporation of nanofillers, as proved by the large number of papers describing nanocomposite membranes based on Pebax for the separation of CO2. Since the field is advancing fast, this review will focus on the most recent progress (from the last 5 years), in order to provide the most up-to-date overview in this area. The most recent approaches for developing Pebax-based mixed-matrix membranes will be discussed, evidencing the most promising filler materials and analyzing the key-factors and the main aspects that are relevant in terms of achieving the best effectiveness of these multifaceted membranes for the development of innovative devices.

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Section: Main Issues In Mmms Developmentmentioning

confidence: 99%

Section: Gas Separation Performancementioning

confidence: 99%

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

Section: Defects-causes and Countermeasuresmentioning

confidence: 99%

See 2 more Smart Citations

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Clarizia

Bernardo

2021

Polymers

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“…There are some approaches such as "thermal annealing" [32], "functionalization of fillers with silane coupling agents" [33], "loading and filler size adjustment" [34], "modification of fillers using ionic liquids" [35] and "polymer matrix grafting" [36] to overcome particle agglomeration in the polymer matrix. Ghadimi et al modified the chemical surface of SiO 2 particles using cis-9-octadecenoic acid and added to PEBA 1657 polymeric matrix.…”

Section: Introductionmentioning

confidence: 99%

Alumina-PEBA/ PSf Multilayer composite membranes for CO2 separation: experimental and molecular simulation studies

et al. 2022

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In this research, Polyether block amide (PEBA) containing different loadings of α-Al 2 O 3 particles was deposited on top of the polysulfone (PSf ) supports to form PEBA 1657-α-Al 2 O 3 /PSf multilayer composite mixed matrix membranes (MCMMMs). Multilayer Composite structure was used to overcome the sedimentation of fillers in the polymer matrix.Moreover, alpha phase of the Al 2 O 3 particles was applied to improve the distribution of these particles at higher loadings. SEM, XRD, and FTIR tests were applied to study morphology, crystalline structure, and chemical structure of the membranes, respectively. Gas permeation properties of the membranes were also measured using three different pure gases (CO 2 , CH 4 , and N 2 ) at the pressure of 7 bar and temperature of 25 C. CO 2 permeance and ideal selectivity of CO 2 /CH 4 , and CO 2 /N 2 for the optimum MCMMM with 20 wt% loading of α-Al 2 O 3 particles were 25% (117.5 Barrer), 81.5 % (32), and 86.5% (57) higher than that of multilayer composite neat membrane (MCNM), respectively. The molecular simulation results confirmed the results of the experimental studies and approved that the α-Al 2 O 3 particles are right candidates for improving the PEBA performance for CO 2 separation.

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

Mahboubi,

Joudaki,

Behbahani

et al. 2023

J of Applied Polymer Sci

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An innovative technique to efficiently remove CO2 involves introducing a third component with a positive affinity with CO2 into a binary mixed‐matrix membrane (MMM) and eliminating interfacial defects in its structure. In this research, novel ternary MMMs (TMMMs) were synthesized by embedding 1–Hexyl–3–methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][NTf2]) ionic liquid (IL) and aluminum oxide (γ–Al2O3) nanoparticles into poly (ether‐block‐amide) (Pebax‐1657) matrix for enhancing CO2 removal from light gases. FESEM, DSC, ATR‐FTIR, and XRD analyses were used to evaluate the fabricated MMMs structurally. The permeation tests of gases (CH4, N2, and CO2) through prepared membranes were conducted at 25°C and 4, 6, 8, and 10 bar pressures. In accordance with the permeation outcomes, the ternary MMMs exhibited enhanced CO2 separation performances compared to the unloaded polymeric membrane. Also, the optimized MMM comprising 10 wt.% of the IL and 6 wt.% of the nanoparticles obtained a CO2 permeability of 173.90 Barrer, as well as CO2/N2 and CO2/CH4 selectivities of 77.98 and 24.29 at 10 bar and 25°C, which are higher by about 51%, 23%, and 22%, respectively than those of the pristine polymeric membrane. Based on these results, the prepared membrane appears to be a promising choice for separating CO2 from light gases.

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Comparison of acidic and basic ionic liquids effects on dispersion of alumina particles in Pebax composite membranes for CO2/N2 separation: Experimental study and molecular simulation

Cited by 14 publications

References 65 publications

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Alumina-PEBA/ PSf Multilayer composite membranes for CO2 separation: experimental and molecular simulation studies

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

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Comparison of acidic and basic ionic liquids effects on dispersion of alumina particles in Pebax composite membranes for CO2/N2 separation: Experimental study and molecular simulation

Cited by 14 publications

References 65 publications

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Alumina-PEBA/ PSf Multilayer composite membranes for CO2 separation: experimental and molecular simulation studies

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

Contact Info

Product

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