Glycol Membranes Research Articles

Erratum: Synthesis and Characterisation of Cellulose Acetate/Polyethylene Glycol Membrane from Pineapple Hump by Phase Inversion Method

Erratum: Synthesis and Characterisation of Cellulose Acetate/Polyethylene Glycol Membrane from Pineapple Hump by Phase Inversion Method

Synthesis and Characterisation of Cellulose Acetate/Polyethylene Glycol Membrane from Pineapple Hump by Phase Inversion Method

Cellulose is a natural polymer contained in growing fibres, such as pineapple fibres. Cellulose can be modified into cellulose acetate, a modified polymer that can be used in the synthesis of a cellulose acetate/polyethylene glycol (CA/PEG) membrane. The phase inversion method was used in this study to produce CA/PEG membranes. Variations in polyethylene glycol (PEG) concentration with a ratio of 1:1 to cellulose acetate, where variations in PEG concentrations used are 2%, 5% and 8%. Acetone and dimethylformamide are used as organic solvents. Membrane morphological analysis using scanning electron microscopy (SEM) and functional group analysis using a Fourier transform infrared (FTIR) spectrometer were performed for membrane characterisation. The result of the synthesis of the CA/PEG membrane is in the form of a thin white layer. The characterisation results of the FTIR spectrometer showed the vibration of the carbonyl bond at wavenumber 1729 cm−1 and the vibration of the hydroxyl bond torque at the wave number 648 cm−1, where the vibration intensity decreased with each addition to the concentration. The results of SEM characterisation show that the increase in PEG concentration increases the percentage porosity of the membrane. The membranes with 2%, 5% and 8% PEG have porosity percentages of 51.54%, 68.70% and 73.50%, respectively. As the membrane with 2% PEG has the lowest percent porosity, it has more potential in removing or filtering solutes from a fluid.

Factors Affecting Silica/Cellulose Nanocomposite Prepared via the Sol-Gel Technique: A Review.

Cellulose/silica nanocomposites, synthesised through the sol-gel technique, have garnered significant attention for their unique properties and diverse applications. The distinctive characteristics of these nanocomposites are influenced by a range of factors, including the cellulose-to-silica ratio, precursor concentration, pH, catalysts, solvent selection, temperature, processing techniques, and agitation. These variables play a pivotal role in determining the nanocomposites' structure, morphology, and mechanical properties, facilitating tailoring for specific applications. Studies by Raabe et al. and Barud et al. demonstrated well-deposited silica nanoparticles within the interstitial spaces of cellulosic fibres, achieved through TEOS precursor hydrolysis and the subsequent condensation of hydroxyl groups on the cellulose fibre surface. The introduction of TEOS established a robust affinity between the inorganic filler and the polymer matrix, emphasising the substantial impact of TEOS concentration on the size and morphology of silica nanoparticles in the final composites. The successful functionalisation of cellulose fibres with the TEOS precursor via the sol-gel method was reported, resulting in reduced water uptake and enhanced mechanical strength due to the strong chemical interaction between silica and cellulose. In research conducted by Feng et al., the silica/cellulose composite exhibited reduced weight loss compared to the pristine cellulose matrix, with the integration of silica leading to an elevated temperature of composite degradation. Additionally, Ahmad et al. investigated the effects of silica addition to cellulose acetate (CA) and polyethylene glycol membranes, noting an increase in Young's modulus, tensile strength, and elongation at break with silica incorporation. However, concentrations exceeding 4% (w/v) resulted in significant phase separations, leading to a decline in mechanical properties.

Evaluation of solubility parameters and relative energy difference (RED) on the preparation of polysulfone/polyethylene glycol membrane: A study on the casting solution and coagulation bath

Solubility parameters are effective factors for controlling membrane preparation based on hydrophilic/hydrophobic polymers. Hansen solubility parameters (HSPs) of a polysulfone/polyethylene glycol (PSU/PEG) in increasing PEG molecular weights and binary coagulation bath of solvent/non-solvent mixtures are investigated. The results revealed that with increased PEG molecular weight in the casting solution, the relative energy difference (RED) of the solution increases, and subsequently its instability increases too. On the other hand, by increasing the solvent in the coagulation bath, RED decreases. Findings demonstrated that by increasing PEG molecular weight to 15,000 g/mol and increasing solvent to 60 wt% in the coagulation bath, an interconnected sponge-like structure with maximum mean pore size (120 nm) was achieved. With increased PEG molecular weight, membrane morphology tended toward to a sponge-like structure due to delayed demixing in the phase inversion stage. Furthermore, pure water permeability and rejection capability of membranes exhibited that with increasing RED of casting solution and reducing RED of coagulation bath, the highest permeability (2199 L/m2h and the lowest rejection capability (33%) of the membrane were attained. This study confirmed that, for the PSU/PEG system, by controlling the solubility parameters, RED value of casting solution and coagulation bath, membrane characteristics can be controlled.

Fine pore tailoring of PSf-b-PEG membrane in sub-5 nm via phase-inversion

It is highly important but challenging to fabricate polymeric separation membranes with pore size in sub-5 nm via the non-solvent induced phase separation (NIPS) process. Herein, we reported a simple but effective method to precisely tailor the pore size of polysulfone-block-polyethylene glycol (PSf-b-PEG) membrane in sub-5 nm via NIPS. Selective solvents of tetramethylene sulfone (Ts) and tetrahydrofuran (THF) towards the corresponding PEG block and PSf block in PSf-b-PEG were mixed at various ratios to tailor the casting solution properties and to finely tailor the pore size of the PSf-b-PEG membranes. The membrane formation mechanism was also investigated to reveal that the PSf-b-PEG membrane exhibited intertwined and fused nanofibrous structure with relatively high porosity and extremely strong mechanical strength. As the content of evaporative THF in the casting solution increased from 42.5 wt% to 85.0 wt%, the MWCO of the PSf-b-PEG membranes decreased from 127 kDa to 6.6 kDa, and the mean effective pore size of the membranes shrank from 15 nm to 2 nm, greatly exceeding the tailorable range and the minimum threshold of the pore size of PSf and PES membranes. Impressively, even if the pore size of the membrane was 2 nm, the pure water permeance of the membrane was still as high as 7 L m−2 h−1 bar−1, indicating the great potential of the PSf-b-PEG membranes for practical applications.

Effect of Al2O3 on Nanostructure and Ion Transport Properties of PVA/PEG/SSA Polymer Electrolyte Membrane.

Polymer electrolyte membrane (PEM) fuel cells have the potential to reduce our energy consumption, pollutant emissions, and dependence on fossil fuels. To achieve a wide range of commercial PEMs, many efforts have been made to create novel polymer-based materials that can transport protons under anhydrous conditions. In this study, cross-linked poly(vinyl) alcohol (PVA)/poly(ethylene) glycol (PEG) membranes with varying alumina (Al2O3) content were synthesized using the solvent solution method. Wide-angle X-ray diffraction (XRD), water uptake, ion exchange capacity (IEC), and proton conductivity were then used to characterize the membranes. XRD results showed that the concentration of Al2O3 affected the degree of crystallinity of the membranes, with 0.7 wt.% Al2O3 providing the lowest crystallinity. Water uptake was discovered to be dependent not only on the Al2O3 group concentration (SSA content) but also on SSA, which influenced the hole volume size in the membranes. The ionic conductivity measurements provided that the samples were increased by SSA to a high value (0.13 S/m) at 0.7 wt.% Al2O3. Furthermore, the ionic conductivity of polymers devoid of SSA tended to increase as the Al2O3 concentration increased. The positron annihilation lifetimes revealed that as the Al2O3 concentration increased, the hole volume content of the polymer without SSA also increased. However, it was densified with SSA for the membrane. According to the findings of the study, PVA/PEG/SSA/0.7 wt.% Al2O3 might be employed as a PEM with high proton conductivity for fuel cell applications.

Polyethylene glycol derivant crosslink and modify chitosan for tympanic membrane repair

This work focuses on developing a novel bioscaffold for tympanic membrane (TM) repair. A strategy to fabricate porous scaffolds is proposed, which is based on the chitosan membranes that were cross-linked and modified by tert-butyl acetoacetate esterified polyethylene glycol, while their mechanical properties and hydrophilicity were also improved. With two different crosslink methods, direct and freeze cross-linking, the chitosan-polyethylene glycol membranes were fabricated. Based on the morphology, hydrophilicity, and mechanical property, the biomedical scaffold has good enough properties for TM repair and the freeze cross-linking membrane is better. Our work provides a simple and reliable method for the preparation of bioscaffolds.

Analysis of model drug permeation through highly crosslinked and biodegradable polyethylene glycol membranes

Various natural and synthetic polymers, such as hyaluronan and functionalized polyethylene glycol (PEG), have been used to fabricate biodegradable membranes. They can potentially be used for local drug release in the body because of their biodegradability. However, this biodegradability causes to difficulties in sustained drug release, and an insufficient ability to control drug permeability can lead to adverse effects. In this study, we developed biodegradable lyophilized PEG membranes from highly crosslinked PEG hydrogels to control drug permeation. Three-arm thiol-modified PEG (PEG-SH, molecular weight [ M w ] = 1300) and four-arm acrylate-modified PEG (PEG-AC, M w = 1892) were used to fabricate the PEG hydrogels, which were then lyophilized to obtain PEG membranes. The degradation time of these PEG membranes was 25 days under physiological conditions. Despite their biodegradability, the membranes allowed the permeation of model drugs constantly until complete degradation around physiological pH. The normalized diffusion coefficients (ln[ D / D 0 ]) for vitamin B 12 and lysozyme (Lys) were −2.6 and −4.8, respectively. In addition, the membranes showed biodegradability and biocompatibility in the abdominal cavity of mice. These results indicate that PEG membranes can be used for sustained drug release in the body due to their biodegradability and drug permeability. • Highly crosslinked, lyophilized polyethylene glycol (PEG) membranes were developed. • Permeability of several model drugs through the PEG membranes was analyzed. • The measured permeability of the drugs depended on their molecular weight. • PEG membranes indicated pH-dependent degradability and release kinetics. • PEG membranes showed excellent biocompatibility and biodegradability in mice.

The experimental and theory research on the sorption kinetic of CH4 and C2H4 in ZIF-8/water-glycol slurry

The zeolitic imidazolate framework (ZIF)-8/water-glycol slurry shows great potential in separating low carbon hydrocarbons. In the present study, the physical properties of the ZIF-8/water-glycol slurry were determined, and the hydrophobicity and glycophilicity of the ZIF-8 material were demonstrated by measuring the contact angle between liquid droplets with a ZIF-8 material, for the first time. It was observed that the increase in pressure could weaken the hydrophobicity of ZIF-8. In addition, the sorption kinetics of CH4 and C2H4 in the slurry were investigated. It was noted that the relatively high temperature and pressure could increase the dissolution rates of CH4 and C2H4 in the slurry. A kinetic model for describing the dissolution of CH4 and C2H4 in the slurry was proposed, wherein the diffusion of gas molecules in the glycol membrane around ZIF-8 particles and those in the inner pores of ZIF-8 were concurrently considered for the first time. The simulation results correlated with the experimental data. Finally, multistage simulation separation experiments for CH4/C2H4 gas mixtures using the slurry were performed. It was observed that after a four-stage simulation separation operation, the concentration of C2H4 decreased from 49.72 mol% in the feed gas to 4.68 mol%. The experimental and modeling results will be helpful for the practical separation application of the ZIF-8 slurry system.

Gold and Cobalt Oxide Nanoparticles Modified Poly-Propylene Poly-Ethylene Glycol Membranes in Poly (ε-Caprolactone) Conduits Enhance Nerve Regeneration in the Sciatic Nerve of Healthy Rats.

Reconstruction of nerve defects is a clinical challenge. Autologous nerve grafts as the gold standard treatment may result in an incomplete restoration of extremity function. Biosynthetic nerve conduits are studied widely, but still have limitations. Here, we reconstructed a 10 mm sciatic nerve defect in healthy rats and analyzed nerve regeneration in poly (ε-caprolactone) (PCL) conduits longitudinally divided by gold (Au) and gold-cobalt oxide (AuCoO) nanoparticles embedded in poly-propylene poly-ethylene glycol (PPEG) membranes (AuPPEG or AuCoOPPEG) and compared it with unmodified PPEG-membrane and hollow PCL conduits. After 21 days, we detected significantly better axonal outgrowth, together with higher numbers of activated Schwann cells (ATF3-labelled) and higher HSP27 expression, in reconstructed sciatic nerve and in corresponding dorsal root ganglia (DRG) in the AuPPEG and AuCoOPPEG groups; whereas the number of apoptotic Schwann cells (cleaved caspase 3-labelled) was significantly lower. Furthermore, numbers of activated and apoptotic Schwann cells in the regenerative matrix correlated with axonal outgrowth, whereas HSP27 expression in the regenerative matrix and in DRGs did not show any correlation with axonal outgrowth. We conclude that gold and cobalt-oxide nanoparticle modified membranes in conduits improve axonal outgrowth and increase the regenerative performance of conduits after nerve reconstruction.

In Vivo Tissue Implantation Model of In Vivo Tissue Implantation Model of Lidocaine (LCH)-Encapsulated Dextran (DEX)/Glycol (GLY) Nanoparticles Delivery for Pain Management.

Lidocaine-loaded nanoparticles are versatile nanomaterials that may be used in pain treatment due to their wound healing properties. The current study describes a wound dressing formulation focused on lidocaine-loaded dextran/ethylene glycol nanoparticles (an anesthetic drug). The lidocaine-loaded dextran/ethylene glycol membranes were fabricated using lidocaine solutions inside the dextran/ethylene glycol medium. The influence of various experimental conditions on dextran/ethylene glycol nanoparticle formations were examined. The sizes of dextran/ethylene glycol and lidocaine-loaded dextran/glycol nanoparticles were examined through the HR-SEM. Moreover, the efficacy antibacterial activity of dextran/glycol and lidocaine-loaded dextran/ethylene glycol nanoparticles was evaluated against the microorganisms grampositive and negative. Furthermore, we observed the In Vivo wound healing of wounds in skin using a mice model over a 16 days period. In this difference to the wounds of untreated mouse, quick healing was observed in the lidocaine-loaded dextran/glycol nanoparticles-treated wounds with fewer injury. These results specify that lidocaine-loaded dextran/ethylene glycol nanoparticles-based dressing material could be a ground-breaking nanomaterial having wound repair and implantations potential required for wound injury in pain management, which was proven using an animal model.

Enhanced desulfurization performance of polyethylene glycol membrane by incorporating metal organic framework MOF-505

• MOF-505/PEG mixed matrix membranes were prepared. • The filled MOF-505 provided extra free volume for the membranes. • The active metal sites of MOF-505 have selective adsorption for thiophene. • Both permeability and selectivity of the MOF-505/PEG MMMs were increased. The metal–organic framework MOF-505 particles were synthesized and incorporated into the polyethylene glycol (PEG) matrix to prepare mixed matrix membranes. A series of methods were used to characterize the structure and morphology of MOF-505 particles and membranes. The prepared MOF-505 had a well-developed pore structure, a large number of metal sites for selective adsorption of thiophene and good compatibility with polymer matrix. Accordingly, the desulfurization performance of the membrane was improved effectively. The effects of the content of MOF-505, operating temperature and feed sulfur content on membrane performance were investigated by pervaporation experiments. The membrane with 3 wt% MOF-505 showed the optimal desulfurization performance with a permeation flux of 2.66 kg/(m 2 ·h) and an enrichment sulfur factor of 8.15, which were increased by 158% and 25% versus pristine membrane, respectively.

Effect of Graphene Oxide on the Performance of Cellulose Acetate/ Polyethylene Glycol Membrane with Blending Method for Desalination of Brackish Water

Polymeric membrane must be strong during the reverse osmosis process. Carbon-based materials like carbon nanotubes (CNTs), graphene, and its derivative graphene oxide (GO) have strong mechanical strength, high resistance to strong acids/ alkaline and organic solvents, and easy in accessibility. In this study, GO were blendingd into Cellulose Acetate/ Polyethylene Glycol (CA/PEG) membranes prepared by phase inversion method. Performance of the membrane was evaluated from the water flux, salt rejection, and permeability. Morphology, hydrofilicity, tensile strength were isvestigated by using Scanning Electron Microscopy (SEM), Fourier-Transformed Infra-Red (FTIR) and contact angle analysis, and Dynamic Mechanical Analysis (DMA), respectively. The experiment results show that hydrophilicity and porosity increase with the addition of GO with the addition of 0.005% GO exhibits the highest value of them resulting membrane with better flux and salt rejection values as compared to the GO-free membrane. With the addition of 0.005 wt% GO resulted in salt rejection (%R) 83.3% and flux permeate (F) 2194 L/m2.h. and tensile strength of 0.0148 Mpa. Membrane with CA/PEG/GO has more advantages, where GO affects the porosity of the membrane by increasing the pore size such as fingers and reducing the thickness of the wall which will result in increased membrane performance ability.

Effect of Varying Amount of Polyethylene Glycol (PEG-600) and 3-Aminopropyltriethoxysilane on the Properties of Chitosan based Reverse Osmosis Membranes.

Chitosan and polyethylene glycol (PEG-600) membranes were synthesized and crosslinked with 3-aminopropyltriethoxysilane (APTES). The main purpose of this research work is to synthesize RO membranes which can be used to provide desalinated water for drinking, industrial and agricultural purposes. Hydrogen bonding between chitosan and PEG was confirmed by displacement of the hydroxyl absorption peak at 3237 cm−1 in pure chitosan to lower values in crosslinked membranes by using FTIR. Dynamic mechanical analysis revealed that PEG lowers Tg of the modified membranes vs. pure chitosan from 128.5 °C in control to 120 °C in CS-PEG5. SEM results highlighted porous and anisotropic structure of crosslinked membranes. As the amount of PEG was increased, hydrophilicity of membranes was increased and water absorption increased up to a maximum of 67.34%. Permeation data showed that flux and salt rejection value of the modified membranes was increased up to a maximum of 80% and 40.4%, respectively. Modified films have antibacterial properties against Escherichia coli as compared to control membranes.

Comparison of a polyethylene glycol membrane and a collagen membrane for the treatment of bone dehiscence defects at bone level implants-A prospective, randomized, controlled, multicenter clinical trial.

The aim of the present randomized, controlled clinical multicenter trial was to compare a polyethylene glycol (PEG) and a native collagen membrane (BG) for simultaneous guided bone regeneration at bony dehiscence-type defects around bone level titanium implants. The study enrolled 117 patients requiring implant treatment in the posterior maxilla or mandible with expected buccal bony dehiscence-type defects at the placed titanium implants. According to a parallel groups design, defects were filled with a synthetic bone filler and randomly assigned to either PEG or BG membrane. As primary parameter, the relative vertical bone fill was assessed at baseline and at re-entry after 6months of healing. As secondary parameters, the marginal bone level (MBL) was assessed radiographically and soft tissue conditions were recorded up to 18months postloading. Both groups showed comparable vertical bone fill revealing a relative change in defect height of 59.7% (PEG) and 64.4% (BG). The absolute mean reduction in defect size was 2.5mm in the PEG group and 3.2mm in the BG group. Although both groups revealed a statistically significant mean defect reduction (p<.001), a comparison between the two groups did not show statistical significances. The non-inferiority test with inferiority limit of -5% could not be rejected, based on the 90% confidence interval of the differences of the two means with lower limit -15.4%. After 18months, an MBL increase of 0.45±0.43mm in the PEG group and 0.41±0.81mm in the BG group was detected (p<.001). Soft tissue complications were observed in both groups without showing statistical significance. Both membranes supported bone regeneration at dehiscence-type defects and obtained vertical bone fill with a relative change in defect height of 59.7% (PEG) and 64.4% (BG); however, the non-inferiority of PEG could not be shown.

Novel PVA/PEG nano-composite membranes tethered with surface engineered multi-walled carbon nanotubes for carbon dioxide separation

Abstract Cross-linked polyvinyl alcohol/polyethylene glycol membranes tethered with surface engineered multi-walled carbon nanotubes (SE-MWCNTs) were prepared and characterized by FT-IR, TGA, SEM, DMA and AFM analysis. The membranes were then analyzed for permeation testing with CO2, methane and nitrogen gases. 0.5 wt. % SE-MWCNT tethered membrane was proved to be the best performing membrane. Effect of feed gas pressure was also studied for the best performing membrane in order to check the effect of plasticization. It has been found that the gas permeation properties decrease slightly by increasing pressure up to 20 bar which is an indication that the membrane does not suffer from plasticization at high pressure. The long term stability of the best performing membrane was checked by giving it exposure to each gas at 20 bar for 96 h and taking the permeation readings after every 12 h. The best performing membrane was then tested at high pressure under mixed gas conditions (50:50) as well. Finally, the gas permeation results were plotted on 2008 Robeson plot and was found that 0.5 wt. % SE-MWCNT tethered membrane crossed the trade-off lines for both CO2/N2 and CO2/CH4 separation under pure as well as mixed gas conditions at high pressure.

In vitro endothelial differentiation evaluation on polycaprolactone-methoxy polyethylene glycol electrospun membrane and fabrication of multilayered small-diameter hybrid vascular graft.

During development of functional tissue engineered vascular graft, ensuring endothelialization at inner layer and mechanically strong outer layer is considered as challenging. The study objective was to fabricate a multilayered artificial blood vessel by dual syringe electrospinning technique. The presented graft was composed of polycaprolactone-methoxy polyethylene glycol which acts as an inner layer whereas Poly [4,4’-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/di(propylene glycol)/polycaprolactone] (PUPCL) (12% w/v) was incorporated as the outer layer. To find out the optimum inner layer, different polycaprolactone-methoxy polyethylene glycol electrospun membranes varying methoxy polyethylene glycol content (0, 5, 10, 20, and 30% w/v) were prepared and evaluated. The characterizations revealed that blending of methoxy polyethylene glycol with polycaprolactone improved hydrophilicity and antithrombogenic properties compared to polycaprolactone or polyurethane polycaprolactone membrane. During in vitro assessment, the optimized polycaprolactone-20% methoxy polyethylene glycol membrane reinforced a greater differentiation of rat bone marrow stem cell into endothelial cells at both mRNA and protein levels by significantly inducing endothelial markers (CD31, Flk-1, and von Willebrand factor) expression. The polyurethane polycaprolactone membrane showed higher mechanical strength than polycaprolactone-methoxy polyethylene glycol while multilayered polycaprolactone-20% methoxy polyethylene glycol/polyurethane polycaprolactone vascular graft exhibited better result compared to single form. Therefore, the strong and bioactive polycaprolactone-20% methoxy polyethylene glycol/polyurethane polycaprolactone small diameter graft (&lt;2 mm) prepared by simple fabrication process could be a promising preliminary platform for vascular tissue engineering application studies.

Characteristics of Cellulose Acetate/Polyethylene Glycol membrane with the addition of Graphene Oxide by using surface coating method

Fabrication of membrane for desalination process with high performance is the objective of this study. The addition of Graphene Oxide (GO) in cellulose acetate/polyethylene glycol (CA/PEG) with a ratio of 80:20 was prepared by a surface coating method. In this study, the composition of GO was compared, with composition ranging from 0.0025 to 0.0125 wt% to the mass of the solvent. The characteristics of membranes were observed by using Scanning Electron Microscopy (SEM), Fourier-Transformed Infra-Red (FTIR), contact angle analysis and Dynamic Mechanical Analysis (DMA). While its performance was observed by analyzing salt rejection, flux permeate and permeability of the membranes. SEM analysis shows that membrane exhibits asymmetric membrane with sponge-like structure. FTIR results show that the peak area of –OH bonding decreases with the addition of GO. This result is in agreement with the contact angle analysis. The experiment results shows that membrane with the best performance is CA/PEG membrane with the addition of 0.01 wt% GO with salt rejection (%R) of 37%, flux permeate (F) of 1356 L/m2.h, and permeability (P) of 0.0013 L/m2.h.kPa.

Modified of Cellulose Acetate/Polyethylene Glycol Membrane by the Addition of Graphene Oxide

Modified of Cellulose Acetate/Polyethylene Glycol Membrane by the Addition of Graphene Oxide

Synthesis and investigation of desalinating, antibacterial, and mechanical properties of tetraethylorthosilicate crosslinked chitosan/polyethylene glycol (PEG‐300) membranes for reverse osmosis

ABSTRACTSolution casting method was used to synthesize chitosan (CS)‐based membranes for reverse osmosis (RO) using PEG‐300 and tetraethylorthosilicate as a crosslinker. Their salt rejection (%) and permeate flux (mL/h.m2) was measured by using lab scale RO plant. FTIR spectroscopy reveals interactions between CS and PEG by shifting of OH peak from 3237 cm−1 to lower wavenumber in modified membranes. SEM results showed pores in modified membranes while pure CS membranes had uniform nonporous and dense microstructure. DMA results demonstrated that the addition of PEG lowers the Tg value up to 6.5%. Water content of membranes increases up to 82.63% as the amount of PEG increases owing to its hydrophilic nature. The bacterial killing ability showed that the modified membranes possess good antibacterial activity against Escherichia coli in comparison to the control film. The permeation results revealed that salt rejection and flux of the modified membranes increased up 60% and 86.36 mL/h.m2, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48870.