Advanced electrokinetic characterization of layer-by-layer assembled polyelectrolyte membranes: Consideration and use of the electrokinetic leakage phenomenon

Lizée, Agathe; Fan, Penglin; Loulergue, Patrick; Szymczyk, Anthony

doi:10.1016/j.seppur.2023.124946

Separation and Purification Technology

2023

DOI: 10.1016/j.seppur.2023.124946

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Advanced electrokinetic characterization of layer-by-layer assembled polyelectrolyte membranes: Consideration and use of the electrokinetic leakage phenomenon

Agathe Lizée,

Penglin Fan,

Patrick Loulergue

et al.

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2024

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Cited by 4 publications

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Surface characterization and Remazol Red adsorption by asymmetric polyethersulfone membranes modified by polyelectrolyte complexes

da Silva Vale,

Bezerra da Silva,

Marcio Paranhos

et al. 2024

J of Applied Polymer Sci

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Polyethersulfone (PES) membranes containing 4‐fluorophenyl sulfone‐terminated poly(diallylpiperidinium hexafluorophosphate)‐sulfonated poly(ethylene terephthalate) polyelectrolyte complexes (PECs) were obtained via phase inversion using three different methods that enabled the complexation of polyelectrolytes (PELs) to occur before, after, and during membrane formation. Atomic force microscopy‐infrared spectroscopy analysis revealed varying concentrations of the polyanion depending on the preparation method and confirmed the presence of PECs in the membranes, highlighting an increase in surface roughness. Zeta potential measurements demonstrated positive surface charges for the membrane comprising PES and the polycation. The reduction in zeta potential in PEC membranes corresponded with the neutralization of positive groups by sulfonated poly(ethylene terephthalate. Scanning electron microscopy micrographs depicted surface imperfections in PEC membranes, emphasizing the influence of PECs on membrane surfaces. The water contact angle decreased, indicating increased hydrophilicity in PEC membranes. Additionally, dye adsorption results showcased significant adsorption, with the membranes absorbing at least 60% of Remazol Red from an aqueous solution. Notably, the Blend membrane outperformed others, exhibiting an exceptional adsorption rate exceeding 92%.

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Surface characterization and Remazol Red adsorption by asymmetric polyethersulfone membranes modified by polyelectrolyte complexes

da Silva Vale,

Bezerra da Silva,

Marcio Paranhos

et al. 2024

J of Applied Polymer Sci

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Rare earth metal oxides smart modifiers in 3D re-entrant surface architecture for efficient membrane separation

Kujawa,

Pianka,

Al-Gharabli

et al. 2024

Desalination

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Electrokinetic index: A new metric for advanced characterization of membranes with various geometries

Lizée,

Loulergue,

Pensel

et al. 2024

Journal of Membrane Science Letters

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Advanced electrokinetic characterization of layer-by-layer assembled polyelectrolyte membranes: Consideration and use of the electrokinetic leakage phenomenon

Cited by 4 publications

References 46 publications

Surface characterization and Remazol Red adsorption by asymmetric polyethersulfone membranes modified by polyelectrolyte complexes

Surface characterization and Remazol Red adsorption by asymmetric polyethersulfone membranes modified by polyelectrolyte complexes

Rare earth metal oxides smart modifiers in 3D re-entrant surface architecture for efficient membrane separation

Electrokinetic index: A new metric for advanced characterization of membranes with various geometries

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