Improving properties of thin film nanocomposite membrane via temperature-controlled interfacial polymerization for nanofiltration process

Seah, Mei Qun; Lau, Woei Jye; Goh, Pei Sean; Ooi, Boon Seng; Lai, Gwo Sung; Ismail, Ahmad Fauzi

doi:10.1016/j.desal.2022.116091

Cited by 30 publications

(13 citation statements)

References 51 publications

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“…Furthermore, we compared TFC membranes prepared in this work with some other nanofiltration membranes reported in other literature studies (Figure b). − Most TFC membranes fabricated on ultrafiltration substrates or other traditional substrates show lower water permeation flux. The present membranes show relatively high water permeation flux of 16.0–21.2 L/m 2 ·h·bar and high Na 2 SO 4 rejection above 95% simultaneously, demonstrating that the TFC membranes fabricated on co-deposited MPPMs have great nanofiltration performance.…”

Section: Resultsmentioning

confidence: 96%

Interface Engineering of Microporous Polypropylene Membranes for Polyamide Thin-Film Composite Nanofiltration Membranes with Robust Structure and Superior Performance

Zhu

et al. 2023

ACS Appl. Polym. Mater.

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Nanofiltration membranes have been widely used in many fields owing to their high separation efficiency and low energy assumption. However, traditional substrates for thin-film composite (TFC) nanofiltration membranes, such as polysulfone or polyethersulfone ultrafiltration membranes, suffer from low surface porosity and poor stability in organic solvents. A microporous polypropylene membrane (MPPM) possesses high organic solvent resistance, high porosity, but poor hydrophilicity. Herein, MPPMs were surface hydrophilized for the preparation of TFC membranes by interfacial polymerization. A green, fast, and stable deposition system based on ferulic acid and Fe3+ was employed for surface hydrophilization of MPPM, and thus, the aqueous solution of piperazine can homogeneously distribute on the substrate surface, which was directly visualized by confocal laser scanning microscopy. The nanofiltration membranes show rejection of 98.1% to Na2SO4 and water permeation flux of about 16 L/m2·h·bar. Moreover, the membranes are stable in a variety of common organic solvents, demonstrating the potential in organic solvent nanofiltration. The proposed strategy expands the selection of porous substrates for interfacial polymerization and harsh application environments for nanofiltration.

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Section: Resultsmentioning

confidence: 96%

Interface Engineering of Microporous Polypropylene Membranes for Polyamide Thin-Film Composite Nanofiltration Membranes with Robust Structure and Superior Performance

Zhu

et al. 2023

ACS Appl. Polym. Mater.

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“…At present, their group further expands the technique to the fabrication of TFN membranes by mist-based IP. 80 As for organic solvents and monomers, spray-coating is introduced to reduce the organic solution amount (Fig. 6c).…”

Section: Constructing Interfaces By Unconventional Methodsmentioning

confidence: 99%

“…At present, their group further expands the technique to the fabrication of TFN membranes by mist-based IP. 80…”

Section: Constructing Interfaces By Unconventional Methodsmentioning

confidence: 99%

Interfacial polymerization at unconventional interfaces: an emerging strategy to tailor thin-film composite membranes

Xin,

Fan,

Guo

et al. 2023

Chem. Commun.

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“…In this study, a novel nonisothermal IP (NIIP) method was proposed for rationally constructing highly permeable and selective PA membranes by engineering IP at the cryogenic aqueous phase (CAP). Previous studies have focused on controlling the heat transfer of IP by tuning the organic phase temperature, [ 34–37 ] but this study demonstrates that CAP has several unique advantages., On the one hand, water has a higher heat transfer coefficient than organic solvents (e.g., n‐hexane), which allows for better control of interfacial heat dissipation during the IP process in CAP. On the other hand, CAP can tune the surface tension and viscosity of water, allowing more tunability of transinterface diffusion of amine monomer (e.g., piperazine).…”

Section: Introductionmentioning

confidence: 91%

Polyamide Nanofilms through a Non‐Isothermal‐Controlled Interfacial Polymerization

Zhao,

Li,

Gao

et al. 2024

Adv Funct Materials

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Efficient thin film composite polyamide (PA) membranes require optimization of interfacial polymerization (IP) process. However, it is challengeable owing to its ultrafast reaction rate coupled with mass and heat transfer, yielding heterogeneous PA membranes with low performance. Herein, a non‐isothermal‐controlled IP (NIIP) method is proposed to fabricate a highly permeable and selective PA membrane by engineering IP at the cryogenic aqueous phase (CAP) to achieve synchronous control of heat and mass transfer in the interfacial region. The CAP also enables the phase transition of the aqueous solution from the liquid to solid state, providing a more comprehensive understanding of the fundamental mechanisms involved in different phase states in the IP process. Consequently, the PA membrane exhibits excellent separation performance with ultrahigh water permeance (42.9 L m−2 h−1 bar−1) and antibiotic desalination efficiency (antibiotic/NaCl selectivity of 159.3). This study provides new insights for the in‐depth understanding of the precise mechanism linking IP to the performance of the targeting membrane.

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Improving properties of thin film nanocomposite membrane via temperature-controlled interfacial polymerization for nanofiltration process

Cited by 30 publications

References 51 publications

Interface Engineering of Microporous Polypropylene Membranes for Polyamide Thin-Film Composite Nanofiltration Membranes with Robust Structure and Superior Performance

Interface Engineering of Microporous Polypropylene Membranes for Polyamide Thin-Film Composite Nanofiltration Membranes with Robust Structure and Superior Performance

Interfacial polymerization at unconventional interfaces: an emerging strategy to tailor thin-film composite membranes

Polyamide Nanofilms through a Non‐Isothermal‐Controlled Interfacial Polymerization

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