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Preparation and characterization of poly (vinylidene fluoride)/TiO

Weiying LI, Xiuli SUN, Chen WEN, Hui LU, Zhiwei WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4,   Pages 492-502 doi: 10.1007/s11783-012-0407-x

Abstract: Poly(vinylidene fluoride) (PVDF)/titanium dioxide (TiO ) hybrid membranes were prepared using nano-TiOcharacterization results demonstrated that nano-sized TiO particles dispersed homogeneously within the PVDFAmong all the prepared membranes, PVDF/TiO membrane containing 10 vol.% TiO exhibited the best hydrophilicitywith an average pure water flux up to 237 L·m ·h , higher than that of unmodified PVDF membranes (155Besides, the bovine serum albumin rejection of the hybrid membrane was improved evidently from 52.3%

Keywords： poly(vinylidene fluoride) (PVDF) membrane     nano-TiO2     anti-fouling performance     water treatment    

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Poly(vinylidene fluoride--hexafluoro propylene) membranes prepared via thermally induced phase separationand application in direct contact membrane distillation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 720-730 doi: 10.1007/s11705-021-2098-y

Abstract: A non-toxic and environmentally safe diluent, acetyl tributyl citrate, was employed to prepare poly(vinylidenefluoride)-co-hexafluoropropylene membranes via thermally induced phase separation.Effects of the polymer concentration on the phase diagram, membrane morphology, hydrophobicity, poreIn direct contact membrane distillation operation with 3.5 wt-% sodium chloride solution

Keywords： poly(vinylidene fluoride)-co-hexafluoropropylene     thermally induced phase separation     non-toxicdiluent     direct contact membrane distillation    

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Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 301-310 doi: 10.1007/s11705-012-1204-6

Abstract: High performance polyvinylidene fluoride (PVDF) flat sheet ultrafiltration (UF) membranes have been preparedScanning electron microscopy measurements showed that the PVDF-PFSA blend membranes had more macroporesand finger-like structures than the native PVDF membranes.The PVDF-PFSA membrane (5 wt-% PEG400+ 5 wt-% PFSA) had a pure water flux of 141.7 L/m ·h, a BSA rejectionThese properties were greatly superior to those of the native PVDF membrane (pure water flux of 5.6 L

Keywords： polyvinylidene fluoride     perfluorosulfonic acid     polyethylene glycol     flat sheet membrane     ultrafiltration    

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Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal Article

Shiyuan Ding, Lilan Zhang, Yang Li, Li´an Hou

Engineering 2019, Volume 5, Issue 5,   Pages 865-871 doi: 10.1016/j.eng.2019.07.021

Abstract:

In this study, a copper ferrocyanide/silica/polyvinylidene fluoride (CuFC/SiO2/PVDF) hollow-fiberThe PVDF hollow-fiber membrane with embedded SiO2 was used to fix the dispersion of CuFC nanoparticlesThe composite membrane showed a high Cs rejection rate and membrane flux at the three layers of CuFCThe CuFC/SiO2/PVDF hollowfiber composite membrane showed a particularly superior removal performanceTherefore, the CuFC/SiO2/PVDF hollow-fiber composite membrane can be used directly in engineering

Keywords： Cesium removal     Composite membrane     Copper ferrocyanide     Polyvinylidene fluoride    

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PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0980-0

Abstract: Polyvinylidene fluoride grafted with poly(ethylene glycol) methyl ether methacrylate (PVDF-g-PEGMA) wasPVDF was blended with the copolymer mixture containing PVDF-g-PEGMA, solvent and residual PEGMA underfrom migrating to the membrane surface.Therefore, we can control the membrane pore size distribution by decreasing the reaction time of PVDF-g-PEGMAThe membrane with PVDF-g-PEGMA at 19 h exhibits the best foulant rejection and cleaning recovery due

Keywords： Polyvinylidene fluoride ultrafiltration membrane     Amphiphilic copolymer     Blended modification     High flux    

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Effect of protein on PVDF ultrafiltration membrane fouling behavior under different pH conditions: interface

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0855-9

Abstract: To further determine the fouling behavior of bovine serum albumin (BSA) on different hydrophilic PVDF, and the adhesion force between BSA–BSA-fouled PVDF/PVA membranes was similar to that between BSA–BSA-fouledPVDF/PVP membranes, which indicated that the fouling was mainly caused by the adhesion interaction betweenmembrane and BSA.At the same pH condition, the PVDF/PVA membrane–BSA adhesion force was smaller than that of PVDF/PVP

Keywords： PVDF membrane     Membrane fouling     Adhesion force     Protein     Interfacial free energy    

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

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 614-633 doi: 10.1007/s11705-021-2115-1

Abstract: Poly(aryl sulfone) as a typical membrane material has been widely used due to excellent mechanical, chemicalHowever, the inherent hydrophobicity of poly(aryl sulfone) based membranes bears with the fouling issueduring applications, which makes the membrane tending to adsorb contaminants on the surface so as toIn this critical review, we give a comprehensive overview on characterizations of hydrophilic membraneand diverse hydrophilic modification approaches of poly(aryl sulfone) membranes, predominantly including

Keywords： poly(aryl sulfone)     membrane separations     modification     hydrophilicity     water treatment    

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Preparation of polyvinylidene PVDF membrane via thermally induced phase separation and its application

Tang Yuanhui,Lin Yakai and Wang Xiaolin

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 24-34

Abstract:

Nowadays membrane technology has been widely employed in the treatmentdecade， plenty of work focused on the preparation and industrialization of advanced polyvinylidene fluoride) method based on thermodynamic and dynamic researches on the membrane formation process.Secondly， advanced production of PVDF hollow-fiber membrane was achieved by an effective combinationFinally， different modules were designed and fabricated according to the characteristic of PVDF membrane

Keywords： thermally induced phase separation     polyvinylidene fluoride     wastewater treatment     membrane preparation    

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Preparation and properties of gel membrane containing porous PVDF-HFP matrix and cross-linked PEG for

ZHANG Mei, CUI Zhenyu, ZHU Baoku, HAN Gaige, XU Youyi, ZHANG Aiqing

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 89-94 doi: 10.1007/s11705-008-0011-6

Abstract: The lithium ion conducting gel polymer electrolyte membrane (Li-GPEM) based on porous poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-HFP) matrix and cross-linked PEG network is prepared by a typicalBy immersing the porous PVDF-HFP membrane in liquid electrolyte containing poly(ethylene glycol) diacrylate

Keywords： ethylene     PEGDA     inversion     network     initiator    

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dimensional lycopodium with hydrophobic nature and interconnected nano-channels into polyvinylidene fluoridemembranes for desalination applications by vacuum membrane distillation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1162-1182 doi: 10.1007/s11705-022-2276-6

Abstract: matrix to fabricate lycopodium/polyvinylidene fluoride flat-sheet membrane for desalination applicationsThe prepared lycopodium/polyvinylidene fluoride membranes and lycopodium were characterized by fieldThe optimized lycopodium/polyvinylidene fluoride membrane exhibits superior performance compared to theneat polyvinylidene fluoride membrane in terms of flux, salt rejection, water contact angle, and hydrophobicityneat polyvinylidene fluoride membrane, optimum membrane, and agglomerated membrane (with high lycopodium

Keywords： lycopodium     hydrophobicity     vacuum membrane distillation     desalination    

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Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1536-1559 doi: 10.1007/s11705-022-2221-8

Abstract: Poly(ether−ether ketone) (PEEK) is a linear aromatic macromolecule, which can form semi-crystalline aggregativeIn the past few decades, many researches and evolutions have emerged in membrane fabrication with PEEKchemical-induced crystallization; the representative applications in ultrafiltration, nanofiltration and membranesolubility in solvents, which can be achieved by altering monomers in synthesis processes or changing membrane

Keywords： PEEK     phase inversion     solvent-resistant membrane     nanofiltration     membrane contactor    

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G-CNTs/PVDF mixed matrix membranes with improved antifouling properties and filtration performance

Xiaoyan Guo, Chunyu Li, Chenghao Li, Tingting Wei, Lin Tong, Huaiqi Shao, Qixing Zhou, Lan Wang, Yuan Liao

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1165-9

Abstract:

The P-OMWCNT-A-GO membrane was fabricated by

It should be due to the enhanced membrane pore

Keywords： carbon nanotubes     graphene oxide     mixed matrix membrane     nanohybrid     antifouling membrane     membrane hydrophilicity    

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Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressuremembrane systems

Xiaomao WANG,Hongwei YANG,Zhenyu LI,Shaoxia YANG,Yuefeng XIE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 155-163 doi: 10.1007/s11783-014-0740-3

Abstract: High-pressure membrane process is one of the cost-effective technologies for the treatment of groundwaterpilot study in treating a typical groundwater in Huaibei Plain containing excessive sodium, sulfate and fluoriderejection ratios of the conductivity (~98.5%), sodium (~98.5%) and fluoride (~99%).Membrane fouling substantially reduced the rejection performance of the fouled membranes.The tight NF membrane also had a good rejection on conductivity (95%), sodium (94%) and fluoride (95%

Keywords： reverse osmosis (RO)     nanofiltration (NF)     water quality standards     sodium     fluoride     cost estimation    

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Uncovering the effect of poly(ethylene-co-vinyl alcohol) molecular weight and vinyl alcohol content onmorphology, antifouling, and permeation properties of polysulfone ultrafiltration membrane: thermodynamic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1484-1502 doi: 10.1007/s11705-023-2331-y

Abstract: Various hydrophilic poly(ethylene-co-vinyl alcohol) (EVOH) were used herein to precisely control theand ultrasonic separation kinetic measurements were also carried out to develop an ultrafiltration membraneThe extracted membrane properties and filtration capabilities were systematically compared to the proposedresults, valuable insights into the selection of hydrophilic copolymers were provided to tailor the membrane

Keywords： polysulfone     blend modification     ultrafiltration membrane     formation hydrodynamics     poly(ethylene-co-vinyl    

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An antifouling catechol/chitosan-modified polyvinylidene fluoride membrane for sustainable oil-in-water

Shanshan Zhao, Zhu Tao, Liwei Chen, Muqiao Han, Bin Zhao, Xuelin Tian, Liang Wang, Fangang Meng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1355-5

Abstract: The membrane had ultrahigh pure water flux and was stable under harsh pH conditions• The hydration layer on the membrane surface prevented oil droplets adhesion.oxidant-induced ultrafast co-deposition of naturally available catechol/chitosan on a porous polyvinylidene fluoride(PVDF) substrate., which was 70% higher than that of the pristine PVDF membrane.

Keywords： Antifouling     Catechol/chitosan co-deposition     Oil-in-water emulsions separation     Underwater superoleophobic    

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Title Author Date Type Operation

Preparation and characterization of poly (vinylidene fluoride)/TiO

Weiying LI, Xiuli SUN, Chen WEN, Hui LU, Zhiwei WANG

Journal Article

Poly(vinylidene fluoride--hexafluoro propylene) membranes prepared via thermally induced phase separationand application in direct contact membrane distillation

Journal Article

Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Journal Article

Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal

Shiyuan Ding, Lilan Zhang, Yang Li, Li´an Hou

Journal Article

PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Journal Article

Effect of protein on PVDF ultrafiltration membrane fouling behavior under different pH conditions: interface

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Journal Article

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

Journal Article

Preparation of polyvinylidene PVDF membrane via thermally induced phase separation and its application

Tang Yuanhui,Lin Yakai and Wang Xiaolin

Journal Article

Preparation and properties of gel membrane containing porous PVDF-HFP matrix and cross-linked PEG for

ZHANG Mei, CUI Zhenyu, ZHU Baoku, HAN Gaige, XU Youyi, ZHANG Aiqing

Journal Article

dimensional lycopodium with hydrophobic nature and interconnected nano-channels into polyvinylidene fluoridemembranes for desalination applications by vacuum membrane distillation

Journal Article

Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Journal Article

G-CNTs/PVDF mixed matrix membranes with improved antifouling properties and filtration performance

Xiaoyan Guo, Chunyu Li, Chenghao Li, Tingting Wei, Lin Tong, Huaiqi Shao, Qixing Zhou, Lan Wang, Yuan Liao

Journal Article

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressuremembrane systems

Xiaomao WANG,Hongwei YANG,Zhenyu LI,Shaoxia YANG,Yuefeng XIE

Journal Article

Uncovering the effect of poly(ethylene-co-vinyl alcohol) molecular weight and vinyl alcohol content onmorphology, antifouling, and permeation properties of polysulfone ultrafiltration membrane: thermodynamic

Journal Article

An antifouling catechol/chitosan-modified polyvinylidene fluoride membrane for sustainable oil-in-water

Shanshan Zhao, Zhu Tao, Liwei Chen, Muqiao Han, Bin Zhao, Xuelin Tian, Liang Wang, Fangang Meng

Journal Article