Fabrication of poly(ethylene glycol) particles with a micro-spherical morphology on polymeric fibers and its application in high flux water filtration

Regev, Clil; Belfer, S.; Holenberg, Marina; Fainstein, Rozalia; Parola, Abraham H.; Kasher, Roni

doi:10.1016/j.seppur.2018.08.068

Cited by 17 publications

(13 citation statements)

References 22 publications

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“…The SWCNT membranes were modified by UV-initiated graft polymerization using a perfluorinated (meth)acrylate HFBM monomer [ 46 ]. The modification was carried out as previously published [ 47 ] on one side of the membrane ( Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

et al. 2021

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The hydrophilic and hydrophobic single-walled carbon nanotube membranes were prepared and progressively applied in sorption, filtration, and pertraction experiments with the aim of eliminating three antibiotics—tetracycline, sulfamethoxazole, and trimethoprim—as a single pollutant or as a mixture. The addition of SiO2 to the single-walled carbon nanotubes allowed a transparent study of the influence of porosity on the separation processes. The mild oxidation, increasing hydrophilicity, and reactivity of the single-walled carbon nanotube membranes with the pollutants were suitable for the filtration and sorption process, while non-oxidized materials with a hydrophobic layer were more appropriate for pertraction. The total pore volume increased with an increasing amount of SiO2 (from 743 to 1218 mm3/g) in the hydrophilic membranes. The hydrophobic layer completely covered the carbon nanotubes and SiO2 nanoparticles and provided significantly different membrane surface interactions with the antibiotics. Single-walled carbon nanotubes adsorbed the initial amount of antibiotics in less than 5 h. A time of 2.3 s was sufficient for the filtration of 98.8% of sulfamethoxazole, 95.5% of trimethoprim, and 87.0% of tetracycline. The thicker membranes demonstrate a higher adsorption capacity. However, the pertraction was slower than filtration, leading to total elimination of antibiotics (e.g., 3 days for tetracycline). The diffusion coefficient of the antibiotics varies between 0.7–2.7 × 10−10, depending on the addition of SiO2 in perfect agreement with the findings of the textural analysis and scanning electron microscopy observations. Similar to filtration, tetracycline is retained by the membranes more than sulfamethoxazole and trimethoprim.

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Section: Methodsmentioning

confidence: 99%

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

et al. 2021

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“…The PDMS membranes were modified using ultra-violet (UV)-initiated graft polymerization as previously published with slight changes [21]. Briefly, the monomers used for the modification were either GMA or MMA with DMAEMA in a 9:1 mole ratio.…”

Section: Membranes Modificationmentioning

confidence: 99%

“…The surface should be adapted to targeted pollutant, whether to separate the pollutant by attraction or repulsion. While seeking membrane selectivity, different membrane surface modifications are available as the addition of a chemical modifier such as sulfonation, carboxylation, epoxidation, and amination, or chemical grafting [19][20][21]. Chemical graft polymerization was shown as a facile method to alter membrane surface properties due to the choice of monomers with diverse sidechain groups [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Glycidyl and Methyl Methacrylate UV-Grafted PDMS Membrane Modification toward Tramadol Membrane Selectivity

et al. 2021

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Pharmaceutical wastewater pollution has reached an alarming stage, as many studies have reported. Membrane separation has shown great performance in wastewater treatment, but there are some drawbacks and undesired byproducts of this process. Selective membranes could be used for pollutant investigation sensors or even for pollutant recovery. The polydimethylsiloxane (PDMS) membrane was first tested on separated and mixed antibiotic (ATB) water solutions containing sulfamethoxazole (SM), trimethoprim (TMP), and tetracycline (TET). Then, the bare and ultra-violet grafted (UV-grafted) PDMS membranes (MMA-DMAEMA 10, GMA-DMAEMA 5, and GMA-DMAEMA 10) were tested in tramadol (TRA) separation, where the diffusion coefficient was evaluated. Finally, the membranes were tested in pertraction with a mixture of SM, TMP, TET, and TRA. The membranes were characterized using the following methods: contact angle measurement, FTIR, SEM/EDX, and surface and pore analysis. The main findings were that TET was co-eluted during mixed ATB pertraction, and GMA-DMAEMA 5 was found to selectively permeate TRA over the present ATBs.

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“…This growing interest is due to the fact that there are many potential benefits in a variety of technologies [3,4]. A number of these investigations have used vinyl [5,6] monomers and glycols [7,8]. The versatility that exists is such that it can make a variability in structures and form different synthesis methodologies.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of butyl acrylate-co-poly (ethylene glycol) dimethacrylate obtained by microemulsion polymerization

Alvarado

Rabelero

Aguilar

et al. 2020

Designed Monomers and Polymers

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The synthesis and characterization of copolymers of n-Butyl Acrylate (BA) and Poly(ethylene glycol) dimethacrylate (PEGDMA) were realized by microemulsion. In this synthesis, the relation of PEGDMA 10, 20, 30, 40 and 50% wt with respect to BA was changed. The copolymers obtained were characterized by the determination of conversions (gravimetry), infrared spectroscopy: Fourier transform (FTIR), dynamic light scattering (DLS), thermogravimetry (TGA) and differential scanning calorimetry (DSC). The results confirmed the synthesis of BA-co -PEGDMA copolymers by the identification of characteristic FTIR bands and which determined the glass transition temperature of the copolymers. The conversions were found in the range of 85% to 90%. Within the stability of the produced latex, it was observed that at 10% and 30% wt. of PEGDMA the systems were stable, but when more PEGDMA was added up 40% to 50% wt., the system became unstable. The stability of produced latexes depends on the PEGDMA contents and this must be less than 30% wt.; meanwhile the PEGDMA content greater than 30% wt. leads to unstable latexes, forming clots. Copolymers showed single glass transition temperatures between −53.37°C and −16.58°C, depending on the composition of PEGDMA in the copolymers. Resulting in the different arrangements of units of PEGDMA along in the chain affected the thermal properties of the final copolymers.

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Fabrication of poly(ethylene glycol) particles with a micro-spherical morphology on polymeric fibers and its application in high flux water filtration

Cited by 17 publications

References 22 publications

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

Glycidyl and Methyl Methacrylate UV-Grafted PDMS Membrane Modification toward Tramadol Membrane Selectivity

Synthesis and characterization of butyl acrylate-co-poly (ethylene glycol) dimethacrylate obtained by microemulsion polymerization

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