Preparation of high-performance PVDF mixed matrix membranes incorporated with PVDF-g-PMMA copolymer and GO@SiO2 nanoparticles for dye rejection applications

Mahdavi, Hossein; Zeinalipour, Nazanin; Kerachian, Mohammad Amin; Heidari, Ali Akbar

doi:10.1016/j.jwpe.2022.102560

Cited by 34 publications

(9 citation statements)

References 58 publications

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“…Moreover, the presence of weak NH absorption peaks of PEI at wave number 1540 cm −1 and CN bond absorption peaks at wave number 1567 cm −1 , indicates that the PG and PEI Schiff base reaction occurred 36,43 . For the PVDF‐PG/PEI/CTS membrane, two peaks of absorption appeared at 937 and 1104 cm −1 attributed to the stretching vibration of SiOH and SiOSi bonds 44,45 . Meanwhile, the broad stretching vibration of the OH/NH absorption peak between 3100 and 3600 cm −1 can be seen.…”

Section: Resultsmentioning

confidence: 96%

“…36,43 For the PVDF-PG/PEI/CTS membrane, two peaks of absorption appeared at 937 and 1104 cm À1 attributed to the stretching vibration of Si OH and Si O Si bonds. 44,45 Meanwhile, the broad stretching vibration of the O H/N H absorption peak between 3100 and 3600 cm À1 can be seen. The presence of these characteristic functional groups indicates the successful coating of CTS onto the membrane.…”

Section: Stability Testsmentioning

confidence: 94%

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Hydrophilic modification of PVDF membranes for oily water separation with enhanced anti‐fouling performance

Kan

Zhang

Ren

et al. 2023

J of Applied Polymer Sci

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The main purpose of this work is to improve the hydrophilicity and antifouling properties of hydrophobic polyvinylidene fluoride (PVDF) microfiltration membranes through modification. Pyrogallol (PG), polyethyleneimine (PEI), and (3-chloropropyl) trimethoxysilane (CTS) formed a stable hydrophilic network by Michael addition/Schiff reaction in alkaline solution Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to characterize the surface chemical composition, surface and cross-section morphology of the membrane. In addition, the properties of the membrane were tested systematically. The asprepared PVDF-PG/PEI/CTS membranes showed a smaller water contact angle down to 21.1± 4.8 . The pure water flux of the modified membrane increased significantly by about 18 folds, from 377.0 ± 61.0 to 6745.0 L m À2 h À1 , the separation efficiency for the four types of oil-in-water emulsions were all greater than 98.8%. In addition, the modified membrane showed high stability under various conditions of acidity, weak alkalinity and high salt content, showing great potential in the actual treatment of oily wastewater.

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Section: Resultsmentioning

confidence: 96%

Section: Stability Testsmentioning

confidence: 94%

Hydrophilic modification of PVDF membranes for oily water separation with enhanced anti‐fouling performance

Kan

Zhang

Ren

et al. 2023

J of Applied Polymer Sci

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“…Recently, the development of new antifouling materials has involved complex synthesis of additives. Some studies combine two sets of additives and blend them together into the polymeric matrix [ 81 , 289 , 350 , 351 , 352 , 353 , 354 ] to improve both antifouling properties and photocatalytic activities of the prepared membranes. However, this should be carried out with great consideration with regards to the ensuing thermodynamics instability of the system, and how this could also influence the viscosity and kinetics of the phase separation.…”

Section: Antifouling Materials For Polymeric Membranesmentioning

confidence: 99%

Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method

et al. 2023

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Membrane technology is an essential tool for water treatment and biomedical applications. Despite their extensive use in these fields, polymeric-based membranes still face several challenges, including instability, low mechanical strength, and propensity to fouling. The latter point has attracted the attention of numerous teams worldwide developing antifouling materials for membranes and interfaces. A convenient method to prepare antifouling membranes is via physical blending (or simply blending), which is a one-step method that consists of mixing the main matrix polymer and the antifouling material prior to casting and film formation by a phase inversion process. This review focuses on the recent development (past 10 years) of antifouling membranes via this method and uses different phase-inversion processes including liquid-induced phase separation, vapor induced phase separation, and thermally induced phase separation. Antifouling materials used in these recent studies including polymers, metals, ceramics, and carbon-based and porous nanomaterials are also surveyed. Furthermore, the assessment of antifouling properties and performances are extensively summarized. Finally, we conclude this review with a list of technical and scientific challenges that still need to be overcome to improve the functional properties and widen the range of applications of antifouling membranes prepared by blending modification.

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“…As a result of the modification of the PVC-g-PEGMA copolymer, the membranes obtained excellent hydrophilicity. Mahdavi et al [ 34 ] used polyvinylidene difluoride (PVDF) and polymethyl methacrylate (PVDF) to prepare a PVDF-g-PMMA copolymer by ATRP. The amphiphilic polymer PVDF-g-PMMA was combined with inorganic nanoparticles to modify the PVDF membrane; the resulting composite membrane had a good fouling resistance and high dye removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic Grafted Polymers Based on Citric Acid and Aniline Used to Enhance the Antifouling and Permeability Properties of PES Membranes

et al. 2023

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Water treatment technology based on ultrafiltration (UF) faces the problem of severe membrane fouling due to its inherent hydrophobicity. The use of amphiphilic polymers that possess both hydrophobic and hydrophilic chain segments can be advantageous for the hydrophilic modification of UF membranes due to their excellent combination in the membrane matrix. In the present study, we examined a novel amphiphilic CA–g–AN material, constructed by grafting citric acid (CA) to aniline (AN), as a modified material to improve the hydrophilicity of a PES membrane. This material was more compatible with the polymer membrane matrix than a pure hydrophilic modified material. The polyethersulfone (PES) membranes modified by amphiphilic CA–g–AN demonstrated a higher water flux (290.13 L·m−2·h−1), which was more than eight times higher than that of the pure PES membrane. Furthermore, the flux recovery ratio (FRR) of the modified membrane could reach 83.24% and the value of the water contact angle (WCA) was 76.43°, demonstrating the enhanced hydrophilicity and antifouling ability of the modified membranes. With this study, we aimed to develop a new amphiphilic polymer to improve the antifouling property and permeability of polymer-based UF membranes to remove organic pollutants from water.

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Preparation of high-performance PVDF mixed matrix membranes incorporated with PVDF-g-PMMA copolymer and GO@SiO2 nanoparticles for dye rejection applications

Cited by 34 publications

References 58 publications

Hydrophilic modification of PVDF membranes for oily water separation with enhanced anti‐fouling performance

Hydrophilic modification of PVDF membranes for oily water separation with enhanced anti‐fouling performance

Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method

Amphiphilic Grafted Polymers Based on Citric Acid and Aniline Used to Enhance the Antifouling and Permeability Properties of PES Membranes

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