A polyethylene glycol (PEG) – polyethersulfone (PES)/multi-walled carbon nanotubes (MWCNTs) polymer blend mixed matrix membrane for CO2/N2 separation

Wong, Kar Kit; Jawad, Zeinab Abbas; Chin, Bridgid Lai Fui

doi:10.1007/s10965-020-02361-5

Cited by 18 publications

(7 citation statements)

References 37 publications

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“…Carbon nanotubes (CNTs) show good permeability as they have extremely smooth walls and contain pores with large diameters. The rate of transport of gas molecules through these pores is higher than the rate of transport recorded for other materials, such as zeolites [3]. However, the extent of dispersion achieved for unmodified CNTs is poor, and these systems usually cluster in polymeric matrices.…”

Section: Introductionmentioning

confidence: 88%

“…To calculate Φ d (Equation 4) for each of the MMMs, the density of the polymeric matrix (polysulfone) used was 1.24 g/cm 3 , and the density of the dispersed phase (MWNT-O) was 1.3 g/cm 3 .…”

Section: Maxwell Modelmentioning

confidence: 99%

“…The filler functions as a porous film that is not selective toward any gas. Hence, Wong and coauthors [3] investigated the use of multi-walled carbon nanotubes (MWCNT) functionalized with beta-cyclodextrin as a filler that can be used for the fabrication of polyethylene glycol (PEG)/polyethersulfone (PES) membranes for CO 2 /N 2 separation. The best result was reported when 0.02 wt.% of the filler was used.…”

Section: Introductionmentioning

confidence: 99%

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Modeling CO2 and N2 Permeation through Mixed Matrix Membranes Containing Oxygenated Carbon Nanotubes Dispersed in Polysulfone

Barbosa¹,

Flores²,

Figueiredo³

2022

AEER

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Mixed matrix membranes (MMMs) consist of a polymeric phase and a dispersed solid filler such as zeolites or carbon nanotubes. We prepared symmetric and asymmetric polysulfone-based MMMs containing functionalized multi-walled carbon nanotubes (MWNT-O) for CO2/N2 separation. Maxwell’s model was used to predict the permeabilities of MMMs. The permeability achieved using the model exhibited a good fit of the model in symmetric MMMs, especially for CO2. This can be potentially attributed to the high affinity of the system toward the polymer matrix. The permeability recorded using Maxwell’s model could not reflect the properties of the asymmetric membranes, and this could be attributed to the generation of voids around the fillers or defects present on the surface of the skin. Finally, a mathematical fit was proposed to improve prediction accuracy for both the MMM systems.

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Section: Introductionmentioning

confidence: 88%

Section: Maxwell Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling CO2 and N2 Permeation through Mixed Matrix Membranes Containing Oxygenated Carbon Nanotubes Dispersed in Polysulfone

Barbosa¹,

Flores²,

Figueiredo³

2022

AEER

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“…The first type (isotropic) is a dense microporous (non-porous) membrane, which has a low flux due to its thickness and small pore size. This type of membrane is used in labs rather than in industrial processes [ 67 , 68 ]. The second type (anisotropic) has a higher flux due to its bigger pore size, which is not uniform and differs according to the location.…”

Section: Membrane Gas Separating Technologymentioning

confidence: 99%

A Prospective Concept on the Fabrication of Blend PES/PEG/DMF/NMP Mixed Matrix Membranes with Functionalised Carbon Nanotubes for CO2/N2 Separation

Mahenthiran

Jawad

2021

Membranes

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With an ever-increasing global population, the combustion of fossil fuels has risen immensely to meet the demand for electricity, resulting in significant increase in carbon dioxide (CO2) emissions. In recent years, CO2 separation technology, such as membrane technology, has become highly desirable. Fabricated mixed matrix membranes (MMMs) have the most desirable gas separation performances, as these membranes have the ability to overcome the trade-off limitations. In this paper, blended MMMs are reviewed along with two polymers, namely polyether sulfone (PES) and polyethylene glycol (PEG). Both polymers can efficiently separate CO2 because of their chemical properties. In addition, blended N-methyl-2-pyrrolidone (NMP) and dimethylformamide (DMF) solvents were also reviewed to understand the impact of blended MMMs’ morphology on separation of CO2. However, the fabricated MMMs had challenges, such as filler agglomeration and void formation. To combat this, functionalised multi-walled carbon nanotube (MWCNTs-F) fillers were utilised to aid gas separation performance and polymer compatibility issues. Additionally, a summary of the different fabrication techniques was identified to further optimise the fabrication methodology. Thus, a blended MMM fabricated using PES, PEG, NMP, DMF and MWCNTs-F is believed to improve CO2/nitrogen separation.

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“…In a particular study, a composite membrane made of PES and CNTs was employed to capture CO Kar et al tried a wet phase-inversion approach to fabricate MMMs using PEG, PES, multi-walled CNTs (MWCNTs) and DMF as a solvent. 13 Tests were conducted on PEG-PES ratios of 20/20, 30/10, and 32/8, as well as nanofillers (MWCNTsF) loading at 0.005 to 0.03 wt%. Excellent selectivity performance for CO 2 /N 2 was obtained with MMMs composed at PEG 30%, PES 10% and MWCNTs 0.02% with a value of 1.235 ± 0.002.…”

Section: Introductionmentioning

confidence: 99%

Quest for high performance carbon capture membranes: Fabrication of SAPO‐34 and CNTs‐doped polyethersulfone‐based mixed‐matrix membranes

Nawaz,

Sarfraz,

Qaiser

et al. 2023

J of Applied Polymer Sci

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Gas separation process is an effective method for capturing and removing CO2 from post‐combustion flue gases. Due to their various essential properties such as ability to improve process efficiency, polymeric membranes are known to dominate the market. Trade‐off between gas permeability and selectivity through membranes limits their separation performance. In this study, solution casting cum phase separation method was utilized to create polyethersulfone‐based composite membranes doped with carbon nanotubes (CNTs) and silico aluminophosphate (SAPO‐34) as nanofiller materials. Membrane properties were then examined by performing gas permeation test, chemical structural analysis and optical microscopy. While enhancing membranes CO2 permeance, SAPO‐34 and CNTs mixture improved their CO2/N2 selectivity. By carefully adjusting membrane casting factors such as filler loadings. Using Taguchi statistical analysis, their carbon capture efficiency was improved. The improved mixed‐matrix membrane with loading of 5 wt% CNTs and 10 wt% SAPO‐34 in PES showed highly promising separation performance with a CO2 permeability of 319 Barrer and an ideal CO2/N2 selectivity of 12, both of which are within the 2008 Robeson upper bound. A better mixed‐matrix membrane with outstanding CO2/N2 selectivity and CO2 permeability was produced as a result of the synergistic effect of adding two types of fillers in optimized loading.

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A polyethylene glycol (PEG) – polyethersulfone (PES)/multi-walled carbon nanotubes (MWCNTs) polymer blend mixed matrix membrane for CO2/N2 separation

Cited by 18 publications

References 37 publications

Modeling CO2 and N2 Permeation through Mixed Matrix Membranes Containing Oxygenated Carbon Nanotubes Dispersed in Polysulfone

Modeling CO2 and N2 Permeation through Mixed Matrix Membranes Containing Oxygenated Carbon Nanotubes Dispersed in Polysulfone

A Prospective Concept on the Fabrication of Blend PES/PEG/DMF/NMP Mixed Matrix Membranes with Functionalised Carbon Nanotubes for CO2/N2 Separation

Quest for high performance carbon capture membranes: Fabrication of SAPO‐34 and CNTs‐doped polyethersulfone‐based mixed‐matrix membranes

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