Synthesis, characterization, and gas separation performances of polysulfone and cellulose acetate-based mixed matrix membranes

Sutrisna, Putu Doddy; Savitri, Emma; Gunawan, Maria A.; Putri, Isra Herdina F.; Rozari, Samuel G. B. de

doi:10.1080/25740881.2020.1738471

Cited by 12 publications

(10 citation statements)

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“…The surface morphology of the pure CA membrane was observed to be defect-free, smooth, and flat, which is a commonly reported characteristic feature in the literature. 15 , 19 , 20 The morphology of the composite membranes at various IL loadings without the application of an electric field, shown in Figure 7 1 b, Figure 7 2 b, and Figure 7 3 b, revealed a smooth and uniform surface. Notably, there were no discernible differences in surface images between the pristine CA and CA-ILs membranes at various loads.…”

Section: Resultsmentioning

confidence: 99%

Electro-casting for Superior Gas Separation Membrane Performance and Manufacturing

Alkandari,

Castro-Dominguez

2023

ACS Appl. Mater. Interfaces

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Gas separation polymer membranes play a pivotal role in various industrial processes including carbon capture and hydrogen production. However, the inherent trade-off between permeability and selectivity coupled with challenges in membrane manufacturing has hindered their widespread industrial deployment. To address the permselectivity challenges, researchers have explored increasingly complex polymers, composite systems, and other materials. In this study, we introduce a novel membrane manufacturing technique called “electro-casting” that not only enables efficient membrane fabrication but also enhances the trade-off of traditional polymer-based membranes. We fabricated cellulose acetate (CA) membranes embedded with 1-ethyl-3-methyl imidazolium via electro-casting and performed a comparative analysis of structural, morphological, and gas transport characteristics against membranes made via conventional casting techniques. We discovered that electro-casted membranes exhibited a unique crystalline structure, surface topology that induced a remarkable 200% improvement in CO 2 /N 2 selectivity and a 110% increase in CO 2 /CH 4 selectivity. The electric field generated during the manufacturing process played a crucial role in altering the supramolecular structure of the polymer, thereby increasing the separation properties of the membranes as well as their thermal and mechanical features. Electro-casting induced a polymer crystallization effect that disrupted the permeability-selectivity trade-off observed in conventional membranes, while producing highly stable membranes. Moreover, the simplicity of this manufacturing method and its significant impact on membrane properties have the potential to accelerate the deployment of gas separation membranes, facilitating the transition toward a NetZero chemical industry.

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Section: Resultsmentioning

confidence: 99%

Electro-casting for Superior Gas Separation Membrane Performance and Manufacturing

Alkandari,

Castro-Dominguez

2023

ACS Appl. Mater. Interfaces

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“…Moreover, solution-based methods allow for the incorporation of additives or modiers, facilitating the synthesis of CA-based composite materials with tailored properties for specic applications. 50 It is necessary to compare the technical difficulties between different methods of CA preparation to identify the most efficient and cost-effective approach. This comparison involves evaluating factors such as reaction efficiency, product yield, purity, scalability, and environmental impact.…”

Section: Synthesis Methodologymentioning

confidence: 99%

“…On the other hand, in situ polymerization yields accurate control over the DS, but extra processes for membrane production and optimization might be needed. 45,50,56…”

Section: Cellulose Acetate-based Membranes: Emerging Recent Trends An...mentioning

confidence: 99%

A review on recent advances of cellulose acetate membranes for gas separation

Bashir,

Lock,

Hira

et al. 2024

RSC Adv.

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“…The pristine CA membrane showed a dense, smooth, and at surface morphology, a characteristic feature found across the literature. 21,51 Fig. 5d shows the surface morphology of the ZIF-67/CA asymmetric membrane, while Fig.…”

Section: Structure Of the Zif-67/ca Asymmetric Membranesmentioning

confidence: 99%