<scp>Polyvinyl alcohol</scp>‐based membranes for filtration of aqueous solutions: A comprehensive review

Razmgar, Kourosh; Nasiraee, Mohammad

doi:10.1002/pen.25846

Cited by 28 publications

(22 citation statements)

References 304 publications

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“…It exhibits outstanding thermal, chemical, and mechanical properties. However, its properties strongly depend on the degree of hydroxylation [ 105 ]. Nevertheless, it can be solubilized in a quite broad range of solvents, making it suitable for the blending modification of numerous types of polymer membranes [ 104 , 105 , 106 ], although compatibility issues arise with highly hydrophobic polymers [ 107 ].…”

Section: Antifouling Materials For Polymeric Membranesmentioning

confidence: 99%

“…However, its properties strongly depend on the degree of hydroxylation [ 105 ]. Nevertheless, it can be solubilized in a quite broad range of solvents, making it suitable for the blending modification of numerous types of polymer membranes [ 104 , 105 , 106 ], although compatibility issues arise with highly hydrophobic polymers [ 107 ]. Yuan et al recently modified a PES membrane by blending different weight ratios (0–30 wt%) of PVA [ 106 ].…”

Section: Antifouling Materials For Polymeric Membranesmentioning

confidence: 99%

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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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Section: Antifouling Materials For Polymeric Membranesmentioning

confidence: 99%

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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“…Despite the active use of PVA as a membrane material, its application is somewhat limited [ 27 ]. Due to the presence of a large number of hydroxyl groups (about 38%), PVA is unstable in aqueous solutions, which leads to low selectivity and high fluxes.…”

Section: Membranes For Eg Dehydrationmentioning

confidence: 99%

A Review of Recent Developments of Pervaporation Membranes for Ethylene Glycol Purification

2022

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Ethylene glycol (EG) is an essential reagent in the chemical industry including polyester and antifreeze manufacture. In view of the constantly expanding field of EG applications, the search for and implementation of novel economical and environmentally friendly technologies for the separation of organic and aqueous–organic solutions remain an issue. Pervaporation is currently known to significantly reduce the energy and resource consumption of a manufacturer when obtaining high-purity components using automatic, easily scalable, and compact equipment. This review provides an overview of the current research and advances in the pervaporation of EG-containing mixtures (water/EG and methanol/EG), as well as a detailed analysis of the relationship of pervaporation performance with the membrane structure and properties of membrane materials. It is discussed that a controlled change in the structure and transport properties of a membrane is possible using modification methods such as treatment with organic solvents, introduction of nonvolatile additives, polymer blending, crosslinking, and heat treatment. The use of various modifiers is also described, and a particularly positive effect of membrane modification on the separation selectivity is highlighted. Among various polymers, hydrophilic PVA-based membranes stand out for optimal transport properties that they offer for EG dehydrating. Fabricating of TFC membranes with a microporous support layer appears to be a viable approach to the development of productivity without selectivity loss. Special attention is given to the recovery of methanol from EG, including extensive studies of the separation performance of polymer membranes. Membranes based on a CS/PVP blend with inorganic modifiers are specifically promising for methanol removal. With regard to polymer wettability properties, it is worth mentioning that membranes based on hydrophobic polymers (e.g., SPEEK, PBI/PEI, PEC, PPO) are capable of exhibiting much higher selectivity due to diffusion limitations.

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“…[8] Although it exhibits positive results, it causes some drawbacks such as (i) high expensive, (ii) difficult to synthesis, (iii) high fuel crossover, (iv) low glass transition temperature (T g ), (v) reduced proton conductivity at higher temperature, and so on, limited their use in PEMFCs. [9,10] This made the researchers to develop alternative PEM materials based on various non-fluorinated aromatic hydrocarbons such as sulfonated poly(ether sulfone) (SPES), [11,12] sulfonated poly(ether ether ketone) (SPEEK), [13][14][15] sulfonated polystyrene (SPS), [16,17] polybenzimidazoles (PBI), [18,19] polyimides (PI), [20,21] poly(vinyl alcohol) (PVA), [22][23][24] sulfonated polystyrene ethylene butylene styrene (SPSEBS), [25,26] and so on. These membranes were extensively studied because of their good proton conductivity and considerable physicochemical and electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Zinc‐trimesic acid metal–organic framework incorporated sulfonated poly(ether ether sulfone) based polymer composite membranes for fuel cell

Kulasekaran

Mahimai

Sivasubramanian

et al. 2022

Polymer Engineering & Sci

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Polymer composite membrane composed of zinc‐trimesic acid based metal–organic framework (ZT‐MOF) and sulfonated poly(ether ether sulfone) (SPEES) for proton exchange membrane fuel cell has been fabricated by solution casting technique. Poly(ether ether sulfone) was sulfonated using concentrated sulfuric acid as a sulfonating agent and the degree of sulfonation was calculated as 36%. The structural analysis of composite membranes was investigated by Fourier transform infrared spectroscopy, scanning electron microscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy analyses. Essential properties like, ion exchange capacity, proton conductivity, water uptake ability, swelling ratio, thermal stability, contact angle, and oxidative stability of the membranes were studied in detail. The composite membrane loaded with 5% of zinc‐trimesic acid metal–organic framework exhibited the water uptake capacity of 37.18%, whereas the pure membrane was restricted to 27.01%. The ion exchange capacity of the prepared electrolyte membranes possess in the range between 1.53 and 2.80 mEq g−1. The SP/ZT‐MOF‐3 membrane produced the maximum proton conductivity of 0.041 S cm−1, whereas the control sample revealed the ionic conductivity of 0.0125 S cm−1. The composite membrane displayed adequate thermal stability when compared with virgin SPEES polymer. Overall, the experimental data of SP/ZT‐MOF membrane demonstrated that the materials are suitable candidates for fuel cell applications.

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Polyvinyl alcohol‐based membranes for filtration of aqueous solutions: A comprehensive review

Cited by 28 publications

References 304 publications

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

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

A Review of Recent Developments of Pervaporation Membranes for Ethylene Glycol Purification

Zinc‐trimesic acid metal–organic framework incorporated sulfonated poly(ether ether sulfone) based polymer composite membranes for fuel cell

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