Quaternized polysulfone and graphene oxide nanosheet derived low fouling novel positively charged hybrid ultrafiltration membranes for protein separation

Kumar, Mahendra; McGlade, Declan; Ulbricht, Mathias; Lawler, Jenny

doi:10.1039/c5ra06893b

Cited by 64 publications

(37 citation statements)

References 55 publications

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“…Figure 3 shows the FTIR spectra of pure PSU after compression molding at 340 • C (designated as the neat polymer (340 • C)); the polymer that was dissolved in N-methyl-2-pyrrolidone, dried at 100 • C, and compression molded at 340 • C (solution (dried at 340 • C)); and also the dissolved polymer just after drying at 100 • C (solution (dried at 100 • C)). Among the many observed peaks, a peak at 1690 cm −1 was chosen as the reference, which corresponds to C=O bond oscillations [48,49]. This peak can be associated with the presence of residual solvent in the sample or partial oxidation of the polymer during one or another treatment.…”

Section: Polysulfone Solutionmentioning

confidence: 99%

Structure and Properties of Polysulfone Filled with Modified Twill Weave Carbon Fabrics

et al. 2019

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Carbon fabrics are widely used in polymer based composites. Nowadays, most of the advanced high-performance composites are based on thermosetting polymer matrices such as epoxy resin. Thermoplastics have received high attention as polymer matrices due to their low curing duration, high chemical resistance, high recyclability, and mass production capability in comparison with thermosetting polymers. In this paper, we suggest thermoplastic based composite materials reinforced with carbon fibers. Composites based on polysulfone reinforced with carbon fabrics using polymer solvent impregnation were studied. It is well known that despite the excellent mechanical properties, carbon fibers possess poor wettability and adhesion to polymers because of the fiber surface chemical inertness and smoothness. Therefore, to improve the fiber–matrix interfacial interaction, the surface modification of the carbon fibers by thermal oxidation was used. It was shown that the surface modification resulted in a noticeable change in the functional composition of the carbon fibers’ surface and increased the mechanical properties of the polysulfone based composites. Significant increase in composites mechanical properties and thermal stability as a result of carbon fiber surface modification was observed.

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Section: Polysulfone Solutionmentioning

confidence: 99%

Structure and Properties of Polysulfone Filled with Modified Twill Weave Carbon Fabrics

et al. 2019

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“…For example, poly (arylene ether sulfone) (PAES) block copolymers with carboxyl (COOH) functionalized CNTs incorporated UF hybrid membrane exhibited relatively low protein adsorption and irreversible protein fouling by increasing hydration of membrane surface and reducing the net charge density [30]. Further, currently fabricated positively charged graphene oxide (GO) nanosheet UF membrane presented enhanced antifouling properties due to the combined effect of hydrophilicity, surface charge and morphology of the membrane at different pH [31]. Recently fabricated CNTs/PANI composite membrane shows superior performance in natural organic matter (NOM) removal [32].…”

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confidence: 99%

Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength

Lee

Jeong

et al. 2017

Separation and Purification Technology

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CitationLee J, Jeong S, Ye Y, Chen V, Vigneswaran S, et al. (2016) Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength. Separation and Purification Technology. Available: http:// dx.Please cite this article as: J. Lee, S. Jeong, Y. Ye, V. Chen, S. Vigneswaran, T. Leiknes, Z. Liu, Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength, Separation and Purification Technology (2016), doi: http://dx. AbstractThe protein fouling behavior was investigated in the filtration of the multiwall carbon nanotube (MWCNT) composite membrane and commercial polyethersulfone ultrafiltration (PES-UF)membrane. The effect of solution chemistry such as pH and ionic strength on the protein fouling mechanism was systematically examined using filtration model such as complete pore blocking, intermediate pore blocking and cake layer formation. The results showed that the initial permeate flux pattern and fouling behavior of the MWCNT composite membrane were significantly influenced by pH and ionic strength while the effect of PES-UF membrane on flux was minimal. In a lysozyme (Lys) filtration, the severe pore blocking in the MWCNT membrane was made by the combined 2 effect of intra-foulant interaction (Lys-Lys) and electrostatic repulsion between the membrane surface and the foulant at pH 4.7 and 10.4, and increasing ionic strength where the foulant-foulant interaction and membrane-fouling interaction were weak. In a bovine serum albumin (BSA) filtration, severe pore blocking was reduced by less deposition via the electrostatic interaction between the membrane and foulant at pH 4.7 and 10.4 and increasing ionic strength, at which the interaction between the membrane and BSA became weak. For binary mixture filtration, the protein fouling mechanism was more dominantly affected by foulant-foulant interaction (Lys-BSA, Lys-Lys, and BSA-BSA) at pH 7.0 and increase in ionic strength. This research demonstrates that MWCNT membrane fouling can be alleviated by changing pH condition and ionic strength based on the foulant-foulant interaction and the electrostatic interaction between the membrane and foulant.Ultrapure water 1. Highlights• The MWCNT membrane was found to have very high sensitivity to the feed properties.• The MWCNT membrane considerably affected the initial flux and fouling behaviour.• Fouling in the MWCNT membrane could be alleviated by controlling solution chemistry.•Fouling was controlled by the membrane-foulant and foulant-foulant interaction.

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“…Instead, DR ir was caused by foulants blocked in the pores of membrane, which was hardly recovered, and was calculated according to Equation (6). In addition, the indexes of the flux recovery ratio (FRR) were calculated using Equation (7) [38,39] as follows:…”

Section: Antifouling Property Evaluationmentioning

confidence: 99%

Highly Dual Antifouling and Antibacterial Ultrafiltration Membranes Modified with Silane Coupling Agent and Capsaicin-Mimic Moieties

et al. 2020

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Dual antifouling and antibacterial polysulfone(PSf)/polyethersulfone(PES) hybrid membranes were developed by the synergy of capsaicin-mimic N-(5-methyl acrylamide-2,3,4 hydroxy benzyl) acrylamide (AMTHBA) and vinyl triethylene (b-methoxy ethoxy) silane (VTMES). First, AMTHBA as a natural antimicrobial agent was incorporated into a casting solution via "microwave-assistance (MWA) in situ polymerization-blending" process to construct a hydroxyl-rich environment. Then, VTMES crosslinked to a hydroxyl-rich polymer matrix via hydrolytic condensation, and the influence of VTMES content on the hybrid membrane properties was systematically investigated. When the VTMES added amount was 1.0 wt %, the hybrid membrane achieved an optimal separation performance including a steady-state humic acid (HA) (5 mg/L) permeation flux of 326 L·m −2 ·h −1 and a rejection percentage of 97%. The antibacterial tests revealed that the hybrid membranes exhibited sustained bactericidal activity and effective inhibition of bacterial adhesion. Besides, the dual-functional membranes were clean as new after two-cycles filtration (with a cleaning efficiency of~90%), indicating that the network silicone film on the surface benefits the foulant repellence. Hopefully, the dual-functional membranes constructed in this study can be applicable to the pretreatment stage of water treatment.Polymers 2020, 12, 412 2 of 17 attachment of organic fouling and bacteria; (ii) bactericidal membranes for killing attached bacteria and preventing the formation of viable biofilm, which is principally against biofouling; and (iii) dual-functional bactericidal membranes for reducing both organic fouling and biofouling [13][14][15][16]. Among these, dual-functional bactericidal modification combining two strategies into one system is considered an ideal method. For example, Zhang et al.[17] designed a dual-functional antibacterial surface with a two-step surface modification strategy, aiming to acquire the properties of fouling resistance and antibacterial performance. Besides, Xie et al. [18] co-deposited polydopamine (PDA) and a zwitterionic polymer onto a polyethersulfone (PES) substrate and then immersed the surface in a AgNO 3 solution, leading to satisfactory antibacterial and antibiofouling properties. More recently, Wu et al. [19] synthesized a bifunctional membrane by incorporating silver-polydopamine nanohybrid (Ag-PDA) nanocomposites in a polysulfone membrane matrix. These results indicated the obvious advantages of dual functionality. However, due to the absence of strong bonding with surrounding polymers, active particles can be gradually leached out during operation, which could deteriorate the membrane antifouling efficiency [20]. In addition, the release of additional agents may have some potential impacts on the environment and human health [21].Capsaicin-mimic materials used as natural antifungal and antibacterial agents exhibit strong inhibition effects on various microbes and have been widely applied to resist marine or biomedical bacterial attachmen...

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Quaternized polysulfone and graphene oxide nanosheet derived low fouling novel positively charged hybrid ultrafiltration membranes for protein separation

Cited by 64 publications

References 55 publications

Structure and Properties of Polysulfone Filled with Modified Twill Weave Carbon Fabrics

Structure and Properties of Polysulfone Filled with Modified Twill Weave Carbon Fabrics

Protein fouling in carbon nanotubes enhanced ultrafiltration membrane: Fouling mechanism as a function of pH and ionic strength

Highly Dual Antifouling and Antibacterial Ultrafiltration Membranes Modified with Silane Coupling Agent and Capsaicin-Mimic Moieties

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