Physical and Mechanical Properties of Hollow Fiber Membranes and Technological Parameters of the Gas Separation Process

Kagramanov, G. G.; Gurkin, V. N.; Farnosova, E. N.

doi:10.3390/membranes11080583

Cited by 6 publications

(5 citation statements)

References 21 publications

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“…However, PES-based hollow fiber membranes have been successfully developed and are widely used in the water industry, particularly multi-bore hollow fibers. One advantage of using membranes based on glassy polymers, like PES, is their relatively high physicomechanical and gas separation characteristics; moreover, high molecular-weight glassy polymers can withstand rather significant deformations 37,38 . The Tg of CPVC is 127 °C, which falls between that of PES and PVDF.…”

Section: Polymer Characterization and Thermodynamic Analysesmentioning

confidence: 99%

WITHDRAWN: Do we need an alternative to polyvinylidene fluoride-based membranes and where will it come from?

Hoek,

Xiao,

Ozdemir

et al. 2023

Preprint

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Recently, there has been widespread news coverage regarding the potential ban on polyvinylidene fluoride (PVDF) as one of thousands of per- and poly-fluoroalkyl compounds by the European Union, the United States and several U.S. states including California (the 5th largest economy in the world). This could greatly impact the membrane manufacturing industry as well as its downstream users in biopharma, automotive, water, dairy, food and beverage industries. Herein, we evaluate the performance and physical-chemical properties of membranes made from PVDF, polyethersulfone (PES) and chlorinated polyvinyl chloride (CPVC) polymers. Both PVDF and PES are widely used in commercial membrane products, but CPVC – while used extensively in water, harsh chemicals, and high temperature piping systems – has not been widely explored as a polymer for use in filtration membranes. We fabricate a series of tight, mesoporous ultrafiltration membranes by a simple nonsolvent induced phase separation (NIPS) process, and systematically characterize and quantitatively rate the performance and physical-chemical properties of all three polymers. All three polymers produce membranes with excellent separation performance and thermal, chemical and mechanical stability. Finally, we explore a range of casting conditions for CPVC to evaluate its potential to make membranes with performance spanning the range of tight UF (typically served by PES) to standard MF (typically served by PVDF). CPVC appears to a viable alternative to both PES and PVDF as it spans the entire range of UF and MF separation performance while offering excellent pure water permeability and solute rejection as well as thermal, chemical, and mechanical stability.

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Section: Polymer Characterization and Thermodynamic Analysesmentioning

confidence: 99%

WITHDRAWN: Do we need an alternative to polyvinylidene fluoride-based membranes and where will it come from?

Hoek,

Xiao,

Ozdemir

et al. 2023

Preprint

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“…The flux rate of the modified membranes is significantly higher than the pristine and keeps on increasing with respect to the PDMAEMA concentration. These results are in accordance with the previous reports in which somewhat similar hydrophilic polymers were embedded into the PES membrane [60,61]. Figure 11b shows a comparative behavior between the flux of pure water and BSA solution.…”

Section: Flux Studiessupporting

confidence: 92%

Antifouling and Water Flux Enhancement in Polyethersulfone Ultrafiltration Membranes by Incorporating Water-Soluble Cationic Polymer of Poly [2-(Dimethyl amino) ethyl Methacrylate]

et al. 2023

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Novel ultrafiltration (UF) polymer membranes were prepared to enhance the antifouling features and filtration performance. Several ultrafiltration polymer membranes were prepared by incorporating different concentrations of water-soluble cationic poly [2-(dimethyl amino) ethyl methacrylate] (PDMAEMA) into a homogenous casting solution of polyethersulfone (PES). After adding PDMAEMA, the effects on morphology, hydrophilicity, thermal stability, mechanical strength, antifouling characteristics, and filtration performance of these altered blended membranes were investigated. It was observed that increasing the quantity of PDMAEMA in PES membranes in turn enhanced surface energy, hydrophilicity, and porosity of the membranes. These new modified PES membranes, after the addition of PDMAEMA, showed better filtration performance by having increased water flux and a higher flux recovery ratio (FRR%) when compared with neat PES membranes. For the PES/PDMAEMA membrane, pure water flux with 3.0 wt.% PDMAEMA and 0.2 MPa pressure was observed as (330.39 L·m−2·h−1), which is much higher than that of the neat PES membrane with the value of (163.158 L·m−2·h−1) under the same conditions. Furthermore, the inclusion of PDMAEMA enhanced the antifouling capabilities of PES membranes. The total fouling ratio (TFR) of the fabricated PES/PDMAEMA membranes with 3.0 wt.% PDMAEMA at 0.2 MPa applied pressure was 36 percent, compared to 64.9 percent for PES membranes.

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“…The observed alteration in morphology yields a beneficial impact on the rate of water flow, thereby augmenting its overall efficiency. The promotion of a high rate of water flux, while maintaining an adequate rejection rate, is heavily influenced by the increased surface hydrophilicity of the ultrafiltration membrane 54 …”

Section: Resultsmentioning

confidence: 99%

Ultrafiltration polyanionic poly (3‐sulfopropyl methacrylate) membranes with enhanced antifouling and water flux

Khan,

Nasir,

Mahmood

et al. 2024

Polymers for Advanced Techs

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Polyethersulfone (PES) membranes are prevalent in the field of water treatment owing to their exceptional separation efficiency, robust mechanical properties, and resistance to chemical degradation. Nevertheless, these membranes are prone to fouling, resulting in a decrease in both flux and ultrafiltration efficiency. In the present study, PES membranes are blended with poly (3‐Sulfopropyl Methacrylate) (PSPMA) in various weight percentages (0%–3%) to improve their antifouling and ultrafiltration properties. The physicochemical properties of the blended membranes, including surface morphology, contact angle, hydrophilicity and surface energy are evaluated. The findings indicate that incorporation PSPMA results in an enhancement of the hydrophilic properties and surface charge of the PES membranes, assessed by employing Bovine Serum Albumin (BSA) as a representative protein. Modified blended membranes display greater Flux Recovery Ratio (FRR%) and exhibit superior fouling resistance. Under the same experimental conditions (0.2 MPa applied pressure), a pure water flux of 154.18 L·m−2·h−1 for PES/PSPMA membrane found substantially greater than pure PES membrane (103.52 L·m−2·h−1) along with Total Fouling Ratio (TFR) of 36% and 64.9% respectively. Exceptional antimicrobial efficacy for modified membranes is revealed against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) using disc diffusion technique rendering them well‐suited for water treatment applications.

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Physical and Mechanical Properties of Hollow Fiber Membranes and Technological Parameters of the Gas Separation Process

Cited by 6 publications

References 21 publications

WITHDRAWN: Do we need an alternative to polyvinylidene fluoride-based membranes and where will it come from?

WITHDRAWN: Do we need an alternative to polyvinylidene fluoride-based membranes and where will it come from?

Antifouling and Water Flux Enhancement in Polyethersulfone Ultrafiltration Membranes by Incorporating Water-Soluble Cationic Polymer of Poly [2-(Dimethyl amino) ethyl Methacrylate]

Ultrafiltration polyanionic poly (3‐sulfopropyl methacrylate) membranes with enhanced antifouling and water flux

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