A recent review of developmental trends in fabricating pervaporation membranes through interfacial polymerization and future prospects

Ang, Micah Belle Marie Yap; Marquez, Jazmine Aiya D.; Huang, Shu-Hsien; Lee, Kueir‐Rarn

doi:10.1016/j.jiec.2021.03.013

Cited by 28 publications

(16 citation statements)

References 130 publications

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“…From the surface images shown in Figure B–D, cracks (red circles) are also observed and decrease with increasing PEA concentration but are still present when the PEA concentration is 10 and 15%, indicating that a higher PEA concentration makes the IP reaction more complete, but the generated membrane is still flawed. Furthermore, the thickness and roughness also increase with increasing PEA concentration because more silver(I)-PEA complex molecules could diffuse deeply into the organic phase at higher aqueous phase concentrations, which consequently enlarge the polymerization area and increase the thickness and roughness. , To fill the cracks, the TMC-PEA(AgNO 3 )-1/PDMS/PSF membrane is immersed again in the aqueous phase to prepare the TMC-PEA(AgNO 3 )-2/PDMS/PSF membrane. From the surface image in Figure E–G, there is no obvious crack on the membrane surface.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the thickness and roughness also increase with increasing PEA concentration because more silver(I)-PEA complex molecules could diffuse deeply into the organic phase at higher aqueous phase concentrations, which consequently enlarge the polymerization area and increase the thickness and roughness. 32,34 To fill the cracks, the TMC-PEA(AgNO 3 )-1/ PDMS/PSF membrane is immersed again in the aqueous phase to prepare the TMC-PEA(AgNO 3 )-2/PDMS/PSF membrane. From the surface image in Figure 5E−G, there is no obvious crack on the membrane surface.…”

Section: Resultsmentioning

confidence: 99%

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Highly Stable Silver-Loaded Membrane Prepared by Interfacial Polymerization for Olefin Separation

Wang

Ren

Luo

et al. 2022

Ind. Eng. Chem. Res.

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The separation of light olefins from paraffins by a silver-loaded facilitated transport membrane has received wide attention in recent years. However, the undesirable instability of carriers Ag+ has consistently restricted its further application. In this work, a silver-loaded facilitated transport membrane is developed by interfacial polymerization on PDMS/PSF support. A part of Ag+ in the prepared membrane is presented as silver(I)-polyetheramine (Ag(I)-PEA) complexes that can effectively enhance the stability of Ag+. To eliminate nonselective voids and bring more carriers (Ag+), secondary aqueous phase treatment was conducted. And the effect of PEA and TMC concentrations, ratio of PEA to AgNO3, as well as secondary aqueous phase treatment on the gas transport is systematically investigated. The results show that the facilitated transport of Ag+ to C3H6 can offset the increase in diffusion resistance induced by the incremental membrane thickness and cross-linking degree as well as the additional AgCl particles on the membrane. Finally, the optimum C3H6/C3H8 selectivity of the silver-loaded membrane is trebled over the membrane without silver. Remarkably, the TMC0.6%-PEA10%(AgNO3)10:9-2/PDMS/PSF membranes show great long-term stability of about 29 days. In this work, both monomer synthesis and preparation methods are facile and versatile, presenting a promising strategy for the preparation of silver-loaded membranes with a long-term separation property.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Highly Stable Silver-Loaded Membrane Prepared by Interfacial Polymerization for Olefin Separation

Wang

Ren

Luo

et al. 2022

Ind. Eng. Chem. Res.

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“…Several IP parameters can be tuned to regulate the surface properties of the polyamide separation layer. These includes the type of membrane support, kind and concentration of monomers, variation of solvents, incorporation of additives, and adopting different IP method [ 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Vacuum-Assisted Interfacial Polymerization Technique for Enhanced Pervaporation Separation Performance of Thin-Film Composite Membranes

et al. 2022

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In this work, thin-film composite polyamide membranes were fabricated using triethylenetetramine (TETA) and trimesoyl chloride (TMC) following the vacuum-assisted interfacial polymerization (VAIP) method for the pervaporation (PV) dehydration of aqueous isopropanol (IPA) solution. The physical and chemical properties as well as separation performance of the TFCVAIP membranes were compared with the membrane prepared using the traditional interfacial polymerization (TIP) technique (TFCTIP). Characterization results showed that the TFCVAIP membrane had a higher crosslinking degree, higher surface roughness, and denser structure than the TFCTIP membrane. As a result, the TFCVAIP membrane exhibited a higher separation performance in 70 wt.% aqueous IPA solution at 25 °C with permeation flux of 1504 ± 169 g∙m−2∙h−1, water concentration in permeate of 99.26 ± 0.53 wt%, and separation factor of 314 (five times higher than TFCTIP). Moreover, the optimization of IP parameters, such as variation of TETA and TMC concentrations as well as polymerization time for the TFCVAIP membrane, was carried out. The optimum condition in fabricating the TFCVAIP membrane was 0.05 wt.% TETA, 0.1 wt% TMC, and 60 s polymerization time.

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“…Membranes prepared through interfacial polymerization demonstrate a promising performance compared to those prepared through Membranes 2022, 12, 607 2 of 13 a dry-phase inversion process. Such membranes are called thin-film composite (TFC) membranes, in which a reaction occurs between an aqueous-phase monomer and an organic-phase monomer [4]. TFC membranes are usually composed of a dense selective layer (10-200 nm) on top of a porous support, and this layer is responsible for high separation efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Performance of Thin-Film Nanocomposite Membranes by Embedding in Situ Silica Nanoparticles

et al. 2022

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In this work, silica nanoparticles were produced in situ, to be embedded eventually in the polyamide layer formed during interfacial polymerization for fabricating thin-film nanocomposite membranes with enhanced performance for dehydrating isopropanol solution. The nanoparticles were synthesized through a sol-gel reaction between 3-aminopropyltrimethoxysilane (APTMOS) and 1,3-cyclohexanediamine (CHDA). Two monomers—CHDA (with APTMOS) and trimesoyl chloride—were reacted on a hydrolyzed polyacrylonitrile (hPAN) support. To obtain optimum fabricating conditions, the ratio of APTMOS to CHDA and reaction time were varied. Field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) were used to illustrate the change in morphology as a result of embedding silica nanoparticles. The optimal conditions for preparing the nanocomposite membrane turned out to be 0.15 (g/g) APTMOS/CHDA and 60 min mixing of APTMOS and CHDA, leading to the following membrane performance: flux = 1071 ± 79 g∙m−2∙h−1, water concentration in permeate = 97.34 ± 0.61%, and separation factor = 85.39. A stable performance was shown by the membrane under different operating conditions, where the water concentration in permeate was more than 90 wt%. Therefore, the embedment of silica nanoparticles generated in situ enhanced the separation efficiency of the membrane.

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A recent review of developmental trends in fabricating pervaporation membranes through interfacial polymerization and future prospects

Cited by 28 publications

References 130 publications

Highly Stable Silver-Loaded Membrane Prepared by Interfacial Polymerization for Olefin Separation

Highly Stable Silver-Loaded Membrane Prepared by Interfacial Polymerization for Olefin Separation

Vacuum-Assisted Interfacial Polymerization Technique for Enhanced Pervaporation Separation Performance of Thin-Film Composite Membranes

Enhancing Performance of Thin-Film Nanocomposite Membranes by Embedding in Situ Silica Nanoparticles

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