Nanofibrous Membrane of Sulfonated Poly(ethylene terephthalate) for Removal of Metal Ions

Ravandi, Seyed Abdolkarim Hosseini; Chegoonian, Parisa; Basiri, Fereshteh; Fiez, Mahmoud

doi:10.2174/15734137113099990005

Cited by 4 publications

(1 citation statement)

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“…[4][5][6][7][8] PET membranes have already been prepared by electrospinning, but the low pore-structure controllability and the inadequate mechanical properties limit the performance of electrospun nanofibrous membranes. [9][10][11][12][13][14] These drawbacks narrow the broader application of PET to prepare specific membranes. It is well known that the phase inversion technique is an important method to produce broadly commercialized polymeric membranes.…”

Section: Introductionmentioning

confidence: 99%

Poly(ethylene terephthalate) phase inversion membranes: Thermodynamics and effects of a poor solvent on the membrane characteristics

Cadore

Ambrosi

Cardozo

et al. 2022

Polymer Engineering & Sci

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Poly(ethylene terephthalate) (PET) is a worldwide established polymer that has raised the interest of researchers for the fabrication of membranes. Polymer membranes are mostly prepared by the phase inversion technique, but the literature is scarce regarding the use of PET for this purpose. The main objective of this work is to prepare PET membranes by the phase inversion technique and characterize the phase separation phenomena and the performance of membranes produced under different solution conditions. The cloud point tests showed that the addition of dichloromethane (DCM) in PET solutions with trifluoroacetic acid (TFA) turned the system more unstable because less water was necessary to promote phase separation. The poor solvent DCM neither affects the chemical structure of membranes nor the surface wettability. SEM images revealed a porous and sponge‐like structure with a thin top layer and the poor solvent seems to suppress the tear‐like macrovoid formation. Filtration experiments indicated higher pure water flux for membranes prepared with DCM in the solution but lower selectivity for model solutes.

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Section: Introductionmentioning

confidence: 99%

Poly(ethylene terephthalate) phase inversion membranes: Thermodynamics and effects of a poor solvent on the membrane characteristics

Cadore

Ambrosi

Cardozo

et al. 2022

Polymer Engineering & Sci

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Preparation of hydrophilic dimethyl 5‐sodium sulfoisophthalate/poly(ethylene terephthalate) nanofiber composite membranes for improving antifouling properties

Chegoonian

Ravandi

Feiz

et al. 2016

J of Applied Polymer Sci

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In this study, the effect of dimethyl 5-sodium sulfoisophthalate (SSI) nanoparticles (NPs) on the antifouling properties of poly(ethylene terephthalate) (PET) electrospun nanofiber membranes (ENMs) was investigated through the ultrafiltration of C. I. Basic Blue 3. 3 dye. To reveal the tortuous effect of this additive on the antifouling properties, scanning electron microscopy was used for the characterization of the ENM structure and the optimization of the SSI NP content. Then, some selected physical and structural properties of the membrane, such as the porosity, moisture regain, contact angle, hydraulic permeability (L p ), and mechanical properties, in the optimized range of SSI NP contents were investigated. Finally, the influence of this additive on the rejection and flux recovery ratio of the prepared membranes was considered. Consequently, the antifouling properties were assessed with consideration of all of the aforementioned parameters. The SSI/PET2 membrane (that with 0.02% w/w SSI NPs with respect to the total amount of PET polymer and SSI NPs), with an average nanofiber diameter of 450 nm, a porosity of 78.44%, a moisture regain of 9.34%, a contact angle of 86.488, an L p of 42,167 L h 21 m 22 bar 21 , a tensile strength of 4.66 6 0.04 MPa, a flux recovery ratio of 15.3%, and a final rejection of 95%, showed a significant enhancement in the antifouling properties compared with pristine PET ENMs.

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Recently developed electrospinning methods: a review

Ravandi

Sadrjahani

Valipouri

et al. 2022

Textile Research Journal

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Conventional electrospinning is an effective and versatile method employed for fabricating nanofibers. However, the relatively low production rate is the major challenge of electrospinning as an economic and scalable method. Recently, several approaches have been developed to ensure the high production rate of nanofibers. This paper has reviewed the latest developed electrospinning methods, such as multi-jet, needleless, bubble, centrifuge and electro-centrifuge systems. Furthermore, the jet formation in centrifugal spinning, as well as electro-centrifuge systems, was investigated through experimental and numerical analysis.

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Nanofibrous Membrane of Sulfonated Poly(ethylene terephthalate) for Removal of Metal Ions

Cited by 4 publications

References 0 publications

Poly(ethylene terephthalate) phase inversion membranes: Thermodynamics and effects of a poor solvent on the membrane characteristics

Poly(ethylene terephthalate) phase inversion membranes: Thermodynamics and effects of a poor solvent on the membrane characteristics

Preparation of hydrophilic dimethyl 5‐sodium sulfoisophthalate/poly(ethylene terephthalate) nanofiber composite membranes for improving antifouling properties

Recently developed electrospinning methods: a review

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