Cover Image, Volume 139, Issue 37

Mahdavi, Hossein; Zeinalipour, Nazanin; Heidari, Ali Akbar

doi:10.1002/app.51138

Cited by 2 publications

(4 citation statements)

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“…Recent studies focus on novel approaches to modify hydrophobic PVDF membranes with hydrophilic or zwitterionic materials. [13][14][15][16][17][18][19] This hydrophilic modification of membranes is frequently adopted to reduce fouling and enhance wettability. Hydrophilic membrane surfaces can bind with water molecules and form a hydration layer, which can effectively inhibit the adsorption of foulants, such as proteins.…”

Section: Introductionmentioning

confidence: 99%

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Surface modification of a PVDF membrane by co‐grafting hydroxyl and zwitterionic polymers to enhance wettability and antifouling property

Lee

Cho

Nam

et al. 2023

J of Applied Polymer Sci

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Polyvinylidene fluoride (PVDF) membranes have been widely applied in the separation of various organic matters owing to their excellent properties. However, they possess low wettability and undergo fouling because of the hydrophobic nature of PVDF. In this study, poly (2‐hydroxyethyl methacrylate) (PHEMA) and poly (sulfobetaine methacrylate) (PSBMA) were co‐introduced to modify the highly hydrophobic PVDF membrane surface via UV photo‐irradiation. Facile UV photo‐grafting was performed by irradiating the pristine PVDF membrane immersed in a PHEMA/PSBMA mixture solution with UV light for 5 min. The performance of the as‐prepared PHEMA/PSBMA‐grafted membrane was compared with that of membranes modified with solely PHEMA or PSBMA. The hydroxyl and zwitterionic groups of the grafted membranes enhanced wettability and increased flux. A tightly bound water layer was formed because of the enhanced wettability, significantly suppressing protein adsorption. The initial flux of bovine serum albumin (BSA) solution through the PHEMA/PSBMA‐grafted membrane was 2861 LMH, which was 3.1 times higher than that obtained by the pristine PVDF membrane. Furthermore, the flux decline of the modified membrane caused by BSA fouling was 49% lower than that of the pristine PVDF membrane. Finally, the PHEMA/PSBMA‐grafted PVDF membrane showed antifouling properties after three BSA filtration cycles.

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Section: Introductionmentioning

confidence: 99%

“…Recent studies focus on novel approaches to modify hydrophobic PVDF membranes with hydrophilic or zwitterionic materials 13–19 . This hydrophilic modification of membranes is frequently adopted to reduce fouling and enhance wettability.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of a PVDF membrane by co‐grafting hydroxyl and zwitterionic polymers to enhance wettability and antifouling property

Lee

Cho

Nam

et al. 2023

J of Applied Polymer Sci

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“…7,8 The separation techniques based on membrane technologies, particularly nanofiltration (NF), are considered as promising approaches for separation and recovery of dyes from dye wastewaters, arising from not only their considerable selectivity but also straightforward and scalable operation procedures. [9][10][11] NF and reverse osmosis (RO) membranes are generally utilized for drinking water treatment, arising from the fact that they are capable of providing an efficient single step barrier that eliminates most of the contaminants. [12][13][14][15] NF membranes, based on charge and size separation approaches, take a main part in overcoming the global water crisis.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, it is well‐known that all these methods are primarily applied for the elimination of dyes and other contaminants as wastes, and no recycling and reusing processes are conducted 7,8 . The separation techniques based on membrane technologies, particularly nanofiltration (NF), are considered as promising approaches for separation and recovery of dyes from dye wastewaters, arising from not only their considerable selectivity but also straightforward and scalable operation procedures 9–11 . NF and reverse osmosis (RO) membranes are generally utilized for drinking water treatment, arising from the fact that they are capable of providing an efficient single step barrier that eliminates most of the contaminants 12–15 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of mixed matrix polyphenylsulfone‐polysulfone blend membranes incorporated with Nickel/Hydrazine@silica core‐shell nanoparticles using VIPS‐NIPS method for efficient dye rejection

Mahdavi,

Khademi,

Heidari

et al. 2023

J of Applied Polymer Sci

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The dye‐water treatment using nanofiltration membranes is still an important issue. In this work, we have reported the fabrication of silica nanoparticles using a robust approach with well‐controlled aspect ratios. Accordingly, we first fabricated hydrophilic Nickel/Hydrazine@silica core‐shell nanoparticles, in which Ni nanoparticles were coated with a shell of silica. Then, different content of the prepared nanoparticles were incorporated into polyphenylsulfone/ polysulfone membrane matrixes in order to enhance the membranes hydrophilicity. The pristine and mixed matrix membranes (MMMs) were fabricated via the vapor‐induced phase separation coupled with non‐solvent‐induced phase separation (VIPS‐NIPS) approach, where Dioxane was employed as the co‐solvent. The dye rejection performance of the prepared membranes was evaluated for aqueous solutions of a variety of dyes, including direct yellow (DY), crystal violet (CV), methyl green (MG), and methylene blue (MB). Accordingly, it was indicated that the membrane with 0.12 wt.% of nanoparticles could provide an outstanding rejection performance as high as 99.7, 99.3, 98.4 and 97 for DY, MG, CV and MB, respectively, a superb water flux (6.1 L/m2 h bar), a great long‐term durability and an excellent antifouling performance.

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Cover Image, Volume 139, Issue 37

Cited by 2 publications

References 0 publications

Surface modification of a PVDF membrane by co‐grafting hydroxyl and zwitterionic polymers to enhance wettability and antifouling property

Surface modification of a PVDF membrane by co‐grafting hydroxyl and zwitterionic polymers to enhance wettability and antifouling property

Fabrication of mixed matrix polyphenylsulfone‐polysulfone blend membranes incorporated with Nickel/Hydrazine@silica core‐shell nanoparticles using VIPS‐NIPS method for efficient dye rejection

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