Purification of surface water using novel hollow fiber membranes prepared from polyetherimide/polyethersulfone blends

Govardhan, Bapanipally; Chandrasekhar, S.S.; Sridhar, S.

doi:10.1016/j.jece.2017.01.027

Cited by 19 publications

(6 citation statements)

References 28 publications

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“…There are few studies on PES/PEI blends. By the phase inversion method, Govardhan et al [ 17 ] prepared the hollow fiber membrane composed of polyethersulfone/polyetherimide blends. The membranes have uniform morphology, hydrophilicity, and stability.…”

Section: Introductionmentioning

confidence: 99%

Molecular Compatibility and Hydrogen Bonding Mechanism of PES/PEI Blends

Zhu

Gao

et al. 2022

Polymers

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The development of high-performance polymer membranes has sparked a lot of attention in recent years. Polymer blending is a potential method of modification. A limitation, however, is the compatibility of blends at the molecular level. In this investigation, polyethersulfone/polyetherimide hollow fiber membranes were prepared by the solution blending method. Compatibility, hydrogen bonding, crystallinity, microstructure, hydrophilicity, mechanical properties, and transmissibility of blended membranes were also characterized. The compatibility and hydrogen bonding action of the two components were confirmed by DSC, FTIR, XPS, and XRD. The structure exhibits a C−H···O interaction motif with the sulfone group acting as a hydrogen bond acceptor from a methyl C−H donor. The π–π stacking between the two polymers arranged molecules more orderly, resulting in enhanced intermolecular interactions. Compared to polyethersulfone hollow fiber membranes, the hydrophilic, mechanical properties, and rejection rate of the blended membranes are more effectively enhanced. Self-assembly of the host polymer with a polymer capable of forming hydrogen bonds to construct controllable blends is a crucial and proven method.

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Section: Introductionmentioning

confidence: 99%

Molecular Compatibility and Hydrogen Bonding Mechanism of PES/PEI Blends

Zhu

Gao

et al. 2022

Polymers

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“…In addition to the above, PEI exhibits a very good liquid permeability. For instance, PEI is used for water purification and alcohol/water separation . Recently, it is introduced in hemodialysis because of its good compatibility with blood and tissues .…”

Section: Introductionmentioning

confidence: 99%

Recent developments in polyetherimide membrane for gas separation

Alqaheem

Alomair

2019

J Chinese Chemical Soc

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Polyetherimide (PEI) is an extraordinary type of polyimide with excellent thermal and mechanical properties. The polymer is also gas permeable and is considered one of the best membranes for gas separation. Despite the high selectivity, PEI suffers from low permeability due to the trade‐off between phenomena in polymers. To overcome this limitation, fillers are added during the membrane preparation to create voids for better gas transport. In this paper, permeability and selectivity data of PEI membranes for the separation of oxygen, carbon dioxide, and helium are discussed. The paper also summarizes the reported studies for adding fillers to improve the membrane performance.

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“…During the last few decades, membrane filtration has extensively been used in water and wastewater treatment, , desalination, dairy production, biomass/water separation, and recovery of rare metals. − Membrane fouling is still a major issue during the application of membrane filtration. Membrane fouling is commonly caused by cake formation, pore blocking, particle deposition, and concentration polarization, which results in the increase of membrane resistance, filtration failure, and high operational cost .…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Assessment of the Roles of Hydrophobicity and Zeta Potential in Chemically Modified Poly(ether sulfone) Membrane Fouling Kinetics

Hua

Wen

2017

Ind. Eng. Chem. Res.

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This study investigated the roles of hydrophobicity and zeta potential of polymer membranes and foulants on membrane fouling during filtration. A series of chemically modified poly(ether sulfone) (PES) membranes were used to evaluate filtration performance with bovine serum albumin (BSA) and humic acid (HA) employed as model foulants. Hydrophobicity and zeta potential of both membranes and foulants were measured and incorporated in the surface interaction energy calculation by the extended Derjaguin–Landau–Verwey–Overbeek (EDLVO) theory analysis. Foulant deposition rate was then calculated based on particle transport equation and interaction energy. Membrane fouling rates, indicated by the decrease of permeate flux, were well correlated (R 2 = 0.74–0.99) with the foulant deposition rates. This correlation indicates that both electrostatic interaction and hydrophobic interaction played decisive roles in membrane fouling. Our results have important implications for elucidation and prediction of the structure–property–performance relationship of diverse chemically modified membranes and may promote the rationale design and development of functional membrane filtration systems.

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Purification of surface water using novel hollow fiber membranes prepared from polyetherimide/polyethersulfone blends

Cited by 19 publications

References 28 publications

Molecular Compatibility and Hydrogen Bonding Mechanism of PES/PEI Blends

Molecular Compatibility and Hydrogen Bonding Mechanism of PES/PEI Blends

Recent developments in polyetherimide membrane for gas separation

Experimental and Modeling Assessment of the Roles of Hydrophobicity and Zeta Potential in Chemically Modified Poly(ether sulfone) Membrane Fouling Kinetics

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