Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental remediation

Yang, Fan; Huang, Junhui; Deng, Lijun; Zhang, Yanqiu; Dang, Guodong; Shao, Lu

doi:10.1007/s11705-021-2115-1

Cited by 27 publications

(4 citation statements)

References 128 publications

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“…Figure shows the decreasing contact angles of the membranes with their increasing PES content: from 68° ± 5° for the pristine membrane to 13° ± 2°, 8° ± 1°, and 5° ± 1° for grafted membranes PES_0.1, PES_0.2, and PES_0.5, respectively. This was most likely due to the increasing trend in DG (Figure B) and the associated higher hydration of the grafted zwitterionic polymer …”

Section: Resultsmentioning

confidence: 99%

Microporous Polyethersulfone Membranes Grafted with Zwitterionic Polymer Brushes Showing Microfiltration Permeance and Ultrafiltration Bacteriophage Removal

Qin

Ziemann

Bar‐Zeev

et al. 2023

ACS Appl. Mater. Interfaces

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Virus removal from water using microfiltration (MF) membranes is of great interest but remains challenging owing to the membranes' mean pore sizes typically being significantly larger than most viruses. We present microporous membranes grafted with polyzwitterionic brushes (N-dimethylammonium betaine) that combine bacteriophage removal in the range of ultrafiltration (UF) membranes with the permeance of MF membranes. Brush structures were grafted in two steps: free-radical polymerization followed by atom transfer radical polymerization (ATRP). Attenuated total reflection Fourier transform infrared (ATR−FTIR) and X-ray photoelectron (XPS) verified that grafting occurred at both sides of the membranes and that the grafting increased with increasing the zwitterion monomer concentration. The log reduction values (LRVs) of the pristine membrane increased from less than 0.5 LRV for T4 (∼100 nm) and NT1 (∼50 nm) bacteriophages to up to 4.5 LRV for the T4 and 3.1 LRV for the NT1 for the brush-grafted membranes with a permeance of about 1000 LMH/bar. The high permeance was attributed to a high-water fraction in the ultra-hydrophilic brush structure. The high measured LRVs of the brush-grafted membranes were attributed to enhanced bacteriophages exclusion from the membrane surface and entrapment of the ones that penetrated the pores due to the membranes' smaller mean pore-size and crosssection porosity than those of the pristine membrane, as seen by scanning electron microscopy (SEM) and measured using liquid− liquid porometry. Micro X-ray fluorescence (μ-XRF) spectrometry and nanoscale secondary ion mass spectrometry showed that 100 nm Si-coated gold nanospheres accumulated on the surface of the pristine membrane but not on the brush-coated membrane and that the nanospheres that penetrated the membranes were entrapped in the brush-grafted membrane but passed the pristine one. These results corroborate the LRVs obtained during filtration experiments and support the inference that the increased removal was due to a combined exclusion mechanism and entrapment. Overall, these microporous brush-grafted membranes show potential for use in advanced water treatment.

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Section: Resultsmentioning

confidence: 99%

Microporous Polyethersulfone Membranes Grafted with Zwitterionic Polymer Brushes Showing Microfiltration Permeance and Ultrafiltration Bacteriophage Removal

Qin

Ziemann

Bar‐Zeev

et al. 2023

ACS Appl. Mater. Interfaces

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“…Graft polymers constructed by covalently tethering polymeric side chains to a linear main chain polymer can access diverse properties by tuning their chain lengths distributions . For instance, graft copolymers with polydisperse side chains were employed to modify nanofiltration membranes to enhance water permeation flux and mitigate bio/organic fouling. − The graft copolymers synthesized by reversible addition–fragmentation chain transfer polymerization of polydisperse oligo(2-ethyl-2-oxazoline) methacrylate monomers exhibited 9% higher hydration and more effective lubrication than the monodisperse analogs with similar grafting densities . The steric repulsion of longer side chains diminished polymer–polymer interactions, creating room for water molecule penetration and forming more hydrated membrane surfaces (Figure b). , …”

Section: Chain Length Distributionmentioning

confidence: 99%

Design of Microstructure-Engineered Polymers for Energy and Environmental Conservation

Yang

Cao

Chen

et al. 2023

JACS Au

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With the ever-growing demand for sustainability, designing polymeric materials using readily accessible feedstocks provides potential solutions to address the challenges in energy and environmental conservation. Complementing the prevailing strategy of varying chemical composition, engineering microstructures of polymer chains by precisely controlling their chain length distribution, main chain regio-/stereoregularity, monomer or segment sequence, and architecture creates a powerful toolbox to rapidly access diversified material properties. In this Perspective, we lay out recent advances in utilizing appropriately designed polymers in a wide range of applications such as plastic recycling, water purification, and solar energy storage and conversion. With decoupled structural parameters, these studies have established various microstructure−function relationships. Given the progress outlined here, we envision that the microstructure-engineering strategy will accelerate the design and optimization of polymeric materials to meet sustainability criteria.

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“…[1][2][3] In order to obtain the given material surface finish, chemical structure during the treatment and composition as well as morphological properties can be changed. [4] Owing to this kind of improvement many effects such as biocompatibility, [5] hydrophilicity, [6] hydrophobicity, [7] improved adhesiveness, [8] promoting adsorption, [9] thermal conductivity enhancement, [10] roughness changes [11] or nanostructures [12] are obtained. Various widely used surface treatment methods are physical, wet chemical, corona, plasma, ultraviolet, annealing and pattering.…”

Section: Introductionmentioning

confidence: 99%

Effect of Non‐Thermal Sulfur Hexafluoride Cold Plasma Modification on Surface Properties of Polyoxymethylene

Chodkowski,

Terpiłowski,

Románszki

et al. 2024

ChemPhysChem

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X‐ray photoelectron spectroscopy was employed to reveal the differences in the chemical structure of the topmost layer after plasma modification. It was found out that changes in the surface properties of the polymer could be observed even after 20 seconds of treatment. The surface becomes hydrophobic or superhydrophobic, with the water contact angles up to 160 degrees. Morphological changes and increased roughness can be observed only in the nanoscale, whereas the structure seems to be unaffected in the microscale. As a result of plasma modification a permanent hydrophobic effect was obtained on the polyoxymethylene surface.

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Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental remediation

Cited by 27 publications

References 128 publications

Microporous Polyethersulfone Membranes Grafted with Zwitterionic Polymer Brushes Showing Microfiltration Permeance and Ultrafiltration Bacteriophage Removal

Microporous Polyethersulfone Membranes Grafted with Zwitterionic Polymer Brushes Showing Microfiltration Permeance and Ultrafiltration Bacteriophage Removal

Design of Microstructure-Engineered Polymers for Energy and Environmental Conservation

Effect of Non‐Thermal Sulfur Hexafluoride Cold Plasma Modification on Surface Properties of Polyoxymethylene

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