Morphologies and separation characteristics of polyphenylsulfone-based solvent resistant nanofiltration membranes: Effect of polymer concentration in casting solution and membrane pretreatment condition

Sani, Nur Aimie Abdullah; Lau, Woei Jye; Ismail, Ahmad Fauzi

doi:10.1007/s11814-014-0281-2

Cited by 23 publications

(17 citation statements)

References 38 publications

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“…In contrast, the membrane obtained at 10‐wt% PEG 400 represents the lowest R rms value at 0.360 μm and thus the lowest surface roughness, which is in agreement with the visual surface roughness in the AFM images. According to the literature, lower surface roughness may be a result of decreased membrane pore size . Therefore, regarding Table , at equal PEG concentration, the membranes prepared using PEG 20 000 reveal rougher surfaces in comparison with the membranes obtained by addition of PEG 400, which might be a result of increased pore sizes.…”

Section: Resultsmentioning

confidence: 68%

“…Despite the aforementioned significant properties of PPSU, there have been a few numbers of studies concerning the preparation and characterization of flat‐sheet PPSU membranes for liquid filtration. The publications on liquid filtration using this kind of membrane generally focused on pervaporation, nanofiltration of solvents, ultrafiltration (UF), and adsorption‐enhanced UF …”

Section: Introductionmentioning

confidence: 99%

“…According to the literature, although Jansen et al have reported the preparation of PPSU/polyimide (PI) membrane for solvent‐resistant nanofiltration, the excellent solvent resistance of PPSU has led to appropriate performance of pure PPSU membranes in several solvent‐resistant nanofiltration studies . However, the 2 major drawbacks of this polymer, including its low water permeability and high fouling tendency, have limited its application in filtration of aqueous media.…”

Section: Introductionmentioning

confidence: 99%

“…10 In addition, PPSU has the tant nanofiltration, the excellent solvent resistance of PPSU has led to appropriate performance of pure PPSU membranes in several solvent-resistant nanofiltration studies. 14,15,17 However, the 2 major drawbacks of this polymer, including its low water permeability 15 and high fouling tendency, 20 have limited its application in filtration of aqueous media. Therefore, membrane modification is required to address the aforementioned problems.…”

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confidence: 99%

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Preparation and characterization of modified polyphenylsulfone membranes with hydrophilic property for filtration of aqueous media

Kiani

Mousavi

Saljoughi

et al. 2018

Polymers for Advanced Techs

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In the present research, the low water flux of polyphenylsulfone membranes was addressed, and a novel improvement in their water permeation and fouling resistance was achieved using polyethylene glycol (PEG) as the hydrophilic additive. Scanning electron microscopy and field emission scanning electron microscopy, atomic force microscopy, attenuated total reflection Fourier‐transform infrared spectroscopy, thermogravimetric analysis, and tensile test were applied for the investigation of membrane morphology, surface topography, surface chemical structure, thermal stability, and mechanical properties, respectively. Moreover, the relative hydrophilicity/hydrophobicity of the membranes was assessed via determination of membrane water uptake capacity and water contact angle. The membrane performance was studied and compared by determination of pure water flux and filtration of canned beans production wastewater as well as bovine serum albumin solution. The filtration results indicated a remarkable pure water flux and 100% turbidity rejection provided by the polyphenylsulfone/PEG 20 000 membrane. In addition, it was confirmed that the amount of residual PEG within the membrane was increased with increasing PEG molecular weight and concentration.

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Section: Resultsmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Preparation and characterization of modified polyphenylsulfone membranes with hydrophilic property for filtration of aqueous media

Kiani

Mousavi

Saljoughi

et al. 2018

Polymers for Advanced Techs

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“…This could be due to the increase in dope solution viscosity upon addition of excessive SiO 2 content [25]. Higher dope solution concentration was reported to produce membranes with thicker and denser skin-layer, resulting in low porosity [43].…”

Section: Membrane Surface Morphologymentioning

confidence: 99%

Preparation and characterization of PES/SiO2 composite ultrafiltration membrane for advanced water treatment

Muhamad

Salim

Lau

2015

Korean J. Chem. Eng.

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Polyethersulfone (PES) is a commonly used polymeric material for the fabrication of ultrafiltration (UF) membranes. However, the hydrophobic nature of PES leads to poor membrane performance with low anti-fouling properties during filtration process. Hence, for this study, the PES-based hollow fiber membrane was modified with inorganic silicon dioxide (SiO 2 ) nanoparticles of various loading (from zero to 4 wt%), aiming to improve the membrane properties for advanced water treatment process. The characterization of the surface morphology, physical and chemical properties of novel PES/SiO 2 composite membranes was performed by SEM, FTIR-ATR, TGA and contact angle analyzer. The SEM images show the changes in membrane structure as well as skin layer thickness upon addition of SiO 2 nanoparticles. The FTIR-ATR analysis shows the functional group of SiO 2 in the polymer matrices. Results further show that the presence of 2 wt% SiO 2 in the membrane matrix is the best loading to improve the water flux and bovine serum albumin (BSA) rejection, achieving 87.2 L/m 2 ·h and 94%, respectively. As a comparison, the control PES membrane only exhibits water flux of 44.2 L/m 2 ·h and rejection of 81%. Results also show that the flux recovery percentage of the membrane was improved from 82% in the control membrane to 93% in the membrane incorporated with 2 wt% SiO 2 , indicating improved membrane anti-fouling property. Furthermore, the PES/SiO 2 membrane shows huge potential for advanced water treatment, as the qualities of the permeate samples treated by this membrane could meet the limit set by a local water company.

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Feasibility of recycled newspaper as cellulose source for regenerated cellulose membrane fabrication

Mohamed

Salleh

Jaafar

et al. 2015

J of Applied Polymer Sci

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An environmental friendly regenerated cellulose membrane (RCM) was successfully prepared via NaOH/urea aqueous solution system by utilizing recycled newspaper (RNP) as the cellulose source. The morphological and chemical structure of resulting membrane were characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) spectroscopy, and thermogravimetric analysis (TGA). Results from FTIR and XRD verified that the transparent RCM possesses cellulose II structure. SEM observation revealed that the transparent RCM consist of homogeneous dense symmetric membrane structure and composed of a skin layer with mean roughness parameter R a , obtained from AFM analysis of 29.53 nm. Pure water flux, water content, water contact angle, porosity, and pore size of the resulting membrane were also measured. This study promotes the potential of the cellulose-based membrane obtained from low cost cellulose source for application in filtration and separation system. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42684. Recently, a variety of solvents based on aqueous alkali (containing NaOH and urea) have been developed and shown to be suitable for fiber spinning, membrane and aerogel formation, cellulose blending, and homogeneous cellulose modification. 20 A number of researchers reported that the 7 wt % NaOH/ 12 wt % urea aqueous solution pre-cooled to 2128C has been

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Morphologies and separation characteristics of polyphenylsulfone-based solvent resistant nanofiltration membranes: Effect of polymer concentration in casting solution and membrane pretreatment condition

Cited by 23 publications

References 38 publications

Preparation and characterization of modified polyphenylsulfone membranes with hydrophilic property for filtration of aqueous media

Preparation and characterization of modified polyphenylsulfone membranes with hydrophilic property for filtration of aqueous media

Preparation and characterization of PES/SiO2 composite ultrafiltration membrane for advanced water treatment

Feasibility of recycled newspaper as cellulose source for regenerated cellulose membrane fabrication

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