EVOH in situ fibrillation and its effect of strengthening, toughening and hydrophilic modification on PVDF hollow fiber microfiltration membrane via TIPS process

Cui, Zhenyu; Tang, Xiuxiu; Wei, Li; Haonan, Liu; Zhang, Jing; Hong, Wei; Li, Jianxin

doi:10.1007/s10853-018-03281-y

Cited by 27 publications

(10 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many ways can reduce membrane fouling. One of the useful ways is to improve the hydrophilicity of the membrane .…”

Section: Introductionmentioning

confidence: 88%

“…One of the useful ways is to improve the hydrophilicity of the membrane. [4][5][6] At present, the main processes for improving the hydrophilicity of the membrane are surface coating, plasma treatment and surface grafting. [7][8][9] However, these methods have poor stability, so it is urgent to find a membrane material with good hydrophilicity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation And Characterizations Of Poly(vinyl butyral)/Caprolactam/Polyethylene Glycols Hydrophilic Flat‐sheet Membrane Through Thermally Induced Phase Separation

Luo

Wang

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

Poly(vinyl butyral)/caprolactam/polyethylene glycols hydrophilic flat‐sheet membranes were prepared via thermally induced phase separation (TIPS) for the first time. Poly(vinyl butyral) (PVB) was used as polymers,caprolactam (CPL) and polyethylene glycols (PEG) were used as mixed diluent. In all situations, the system occurs liquid‐liquid (L−L) phase separation to obtain asymmetric honeycomb structures. The effects of PVB concentration and molecular weight of PEG on the structure and performance of the flat‐sheet membranes were investigated in detail. Herein, the obtained PVB/CPL/PEG microporous membrane has some hydrophilicity and high BSA rejection ratio. Particularly, when the PVB concentration was 30 wt%, the PVB/CPL/PEG200 membrane achieved the highest bovine serum albumin (BSA) rejection of 85.36%. The prepared membrane had good antipollution performance, and the minimum adsorption amount of BSA was 4.94 g/m2. Those results show the PVB microporous membrane has great application prospects in the field of water treatment.

show abstract

“…Many ways can reduce membrane fouling. One of the useful ways is to improve the hydrophilicity of the membrane .…”

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Preparation And Characterizations Of Poly(vinyl butyral)/Caprolactam/Polyethylene Glycols Hydrophilic Flat‐sheet Membrane Through Thermally Induced Phase Separation

Luo

Wang

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…Ultraviolet (UV)-induced Cu(II)-mediated reversible deactivation radical polymerization (RDRP) is an environmentally friendly synthesis technology which combines UV stimulation and Cu(II)-mediated RDRP (Chuang et al 2014;Hu et al 2018aHu et al , 2018b. UV-induced Cu(II)-mediated RDRP can be used to modify pure PVDF membranes as it enables a more compact combination of hydrophobic and hydrophilic chains to ensure that the hydrophilic chain is fixed on the surface of the PVDF membranes (Cui et al 2019;Zou et al 2020;Li et al 2021). Therefore, the addition of amphiphilic copolymers to PVDF membranes can improve the hydrophilicity and antifouling properties.…”

Section: Introductionmentioning

confidence: 99%

Fabricating novel PVDF-g-IBMA copolymer hydrophilic ultrafiltration membrane for treating papermaking wastewater with good antifouling property

Tong

Ding

Shi

et al. 2021

Water Science and Technology

View full text Add to dashboard Cite

Ultrafiltration membranes are widely used for the treatment of papermaking wastewater. The antifouling performance of polyvinylidene fluoride (PVDF) ultrafiltration membranes can be improved by changing the hydrophilicity. Here, a novel amphiphilic copolymer material, PVDF grafted with N-isobutoxy methacrylamide (PVDF-g-IBMA), was prepared using ultraviolet-induced Cu(II)-mediated reversible deactivation radical polymerization. The amphipathic copolymer was used to prepare ultrafiltration membrane via NIPS. The prepared PVDF-g-IBMA ultrafiltration membrane was estimated using 1H NMR, FT-IR, and DSC. And the contact angle, casting viscosity, and the permeation performance of the PVDF-g-IBMA ultrafiltration membrane were determined. The pure water flux, bovine serum albumin removal rate, and pure water flux recovery rate of the PVDF-g-IBMA ultrafiltration membrane were 432.8 L·m−2·h−1, 88.4%, and 90.8%, respectively. Furthermore, for the treatment of actual papermaking wastewater, the chemical oxygen demand and turbidity removal rates of the membrane were 61.5% and 92.8%, respectively. The PVDF-g-IBMA amphiphilic copolymer ultrafiltration membrane exhibited good hydrophilicity and antifouling properties, indicating its potential for treating papermaking wastewater.

show abstract

“…Membrane separation technology shows great potential in sewage treatment for its easy operation, energy saving, and environmental friendliness [1][2][3]. Poly(vinylidene fluoride) (PVDF) ultrafiltration (UF) membranes were widely used in the chemical, biomedicine, and food industries, as well as for drinking water or wastewater treatment, thanks to its good mechanical properties, excellent chemical resistance, and thermal stability [4][5][6]. However, organic foulants, like bovine serum albumin (BSA), humic acid (HA), and sodium alginate (SA) [7][8][9][10][11][12][13][14], easily adsorb onto the hydrophobic membrane surface or block into internal pores during the filtering process, thus reducing water flux and sacrifice membrane lifetime [15,16].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Multi-Hydrogen Bond Self-Assembly Poly(MAAc-co-MAAm) Hydrogel Modified PVDF Ultrafiltration Membrane to Enhance Anti-Fouling Property

Zhai

et al. 2021

Membranes

View full text Add to dashboard Cite

In this work, a facile preparation method was proposed to reduce natural organics fouling of hydrophobic membrane via UV grafting polymerization with methacrylic acid (MAAc) and methyl acrylamide (MAAm) as hydrophilic monomers, followed by multihydrogen bond self-assembly. The resulting poly(vinylidene fluoride)-membranes were characterized with respect to monomer ratio, chemical structure and morphology, surface potential, and water contact angle, as well as water flux and organic foulants ultrafiltration property. The results indicated that the optimal membrane modified with a poly(MAAc-co-MAAm) polymer gel layer derived from a 1:1 monomer ratio exhibited superior hydrophilicity and excellent gel layer stability, even after ultrasonic treatment or soaking in acid or alkaline aqueous solution. The initial water contact angle of modified membranes was only 36.6° ± 2.9, and dropped to 0° within 13 s. Moreover, flux recovery rates (FRR) of modified membranes tested by bovine serum albumin (BSA), humic acid (HA), and sodium alginate (SA) solution, respectively, were all above 90% after one-cycle filtration (2 h), significantly higher than that of the pure membrane (70–76%). The total fouling rates (Rt) of the pure membrane for three foulants were as high as 47.8–56.2%, while the Rt values for modified membranes were less than 30.8%. Where Rt of BSA dynamic filtration was merely 10.7%. The membrane designed through grafting a thin-layer hydrophilic hydrogel possessed a robust antifouling property and stability, which offers new insights for applications in pure water treatment or protein purification.

show abstract

EVOH in situ fibrillation and its effect of strengthening, toughening and hydrophilic modification on PVDF hollow fiber microfiltration membrane via TIPS process

Cited by 27 publications

References 35 publications

Preparation And Characterizations Of Poly(vinyl butyral)/Caprolactam/Polyethylene Glycols Hydrophilic Flat‐sheet Membrane Through Thermally Induced Phase Separation

Preparation And Characterizations Of Poly(vinyl butyral)/Caprolactam/Polyethylene Glycols Hydrophilic Flat‐sheet Membrane Through Thermally Induced Phase Separation

Fabricating novel PVDF-g-IBMA copolymer hydrophilic ultrafiltration membrane for treating papermaking wastewater with good antifouling property

Facile Fabrication of Multi-Hydrogen Bond Self-Assembly Poly(MAAc-co-MAAm) Hydrogel Modified PVDF Ultrafiltration Membrane to Enhance Anti-Fouling Property

Contact Info

Product

Resources

About