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Antibiofouling Polyvinylidene Fluoride Membrane Functionalized by Diblock Copoly(ionic liquid) Brushes
https://orcid.org/0000-0003-2848-3633
To combat membrane biofouling, diblock copoly(ionic liquid) membranes (PIL-M) with the controlled structure were prepared by introducing cationic and anionic PIL brushes on the PVDF membrane by secondary atom transfer radical polymerization (ATRP). The antibacterial performance and hydrophilicity of the membranes were optimized by adjusting the order of the cationic and anionic PIL brush layers. The chemical composition and morphological characterization of diblock PIL-M membranes demonstrated the feasibility of the diblock modification by the ATRP method. The diblock PIL-M membranes exhibited broad-spectrum antibacterial activity, varying in effectiveness depending on the functionalized structure. Among them, the membrane with a bottom anionic PIL brush layer and surface cationic brush layer (C12-TA-M) had the best bacterial inhibition effect, which could be as high as 92.0%. Moreover, the diblock PIL-M membranes possessed improved biofouling resistance during the dynamic filtration, and the C12-TA-M membrane showed a 51.4% increase in biofouling resistance compared to the pristine PVDF membrane. Characterization of surface energy and interaction energy of functionalized membrane demonstrated that the introduction of a hydrophilic anionic PIL brush layer can further enhance the antiadhesive ability of the modified membrane. This study provides an effective strategy to design and prepare ionic liquid-based antifouling membranes and verifies its potential applications in water or wastewater treatment.
Antibiofouling Polyvinylidene Fluoride Membrane Functionalized by Diblock Copoly(ionic liquid) Brushes
https://orcid.org/0000-0003-2848-3633
To combat membrane biofouling, diblock copoly(ionic liquid) membranes (PIL-M) with the controlled structure were prepared by introducing cationic and anionic PIL brushes on the PVDF membrane by secondary atom transfer radical polymerization (ATRP). The antibacterial performance and hydrophilicity of the membranes were optimized by adjusting the order of the cationic and anionic PIL brush layers. The chemical composition and morphological characterization of diblock PIL-M membranes demonstrated the feasibility of the diblock modification by the ATRP method. The diblock PIL-M membranes exhibited broad-spectrum antibacterial activity, varying in effectiveness depending on the functionalized structure. Among them, the membrane with a bottom anionic PIL brush layer and surface cationic brush layer (C12-TA-M) had the best bacterial inhibition effect, which could be as high as 92.0%. Moreover, the diblock PIL-M membranes possessed improved biofouling resistance during the dynamic filtration, and the C12-TA-M membrane showed a 51.4% increase in biofouling resistance compared to the pristine PVDF membrane. Characterization of surface energy and interaction energy of functionalized membrane demonstrated that the introduction of a hydrophilic anionic PIL brush layer can further enhance the antiadhesive ability of the modified membrane. This study provides an effective strategy to design and prepare ionic liquid-based antifouling membranes and verifies its potential applications in water or wastewater treatment.
Antibiofouling Polyvinylidene Fluoride Membrane Functionalized by Diblock Copoly(ionic liquid) Brushes
https://orcid.org/0000-0003-2848-3633
To combat membrane biofouling, diblock copoly(ionic liquid) membranes (PIL-M) with the controlled structure were prepared by introducing cationic and anionic PIL brushes on the PVDF membrane by secondary atom transfer radical polymerization (ATRP). The antibacterial performance and hydrophilicity of the membranes were optimized by adjusting the order of the cationic and anionic PIL brush layers. The chemical composition and morphological characterization of diblock PIL-M membranes demonstrated the feasibility of the diblock modification by the ATRP method. The diblock PIL-M membranes exhibited broad-spectrum antibacterial activity, varying in effectiveness depending on the functionalized structure. Among them, the membrane with a bottom anionic PIL brush layer and surface cationic brush layer (C12-TA-M) had the best bacterial inhibition effect, which could be as high as 92.0%. Moreover, the diblock PIL-M membranes possessed improved biofouling resistance during the dynamic filtration, and the C12-TA-M membrane showed a 51.4% increase in biofouling resistance compared to the pristine PVDF membrane. Characterization of surface energy and interaction energy of functionalized membrane demonstrated that the introduction of a hydrophilic anionic PIL brush layer can further enhance the antiadhesive ability of the modified membrane. This study provides an effective strategy to design and prepare ionic liquid-based antifouling membranes and verifies its potential applications in water or wastewater treatment.
Antibiofouling Polyvinylidene Fluoride Membrane Functionalized by Diblock Copoly(ionic liquid) Brushes
Xie, Daosen (Autor:in) / Zhao, He (Autor:in) / Dilxat, Dilnur (Autor:in) / Ren, Shaojie (Autor:in) / Wang, Yunkun (Autor:in)
ACS ES&T Engineering ; 3 ; 1330-1338
08.09.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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