Development of reactive thin film polymer brush membranes to prevent biofouling

Malaisamy, Ramamoorthy; Berry, David; Holder, Diane; Raskin, Lutgarde; Lepak, Lori A.; Jones, Kimberly L.

doi:10.1016/j.memsci.2010.01.011

Cited by 69 publications

(37 citation statements)

References 51 publications

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“…To prevent bacterial growth and biofilm formation, antibacterial materials, such as silver, chitosan, quaternary ammonium groups, photocatalytic TiO 2 , and ethylene glycol oligomer, have been incorporated into or onto membrane surfaces following different routes [9][10][11][12]. Among these, silver based materials were frequently used due to their high antimicrobial activity.…”

Section: Introductionmentioning

confidence: 99%

Layer-by-layer surface modification of polyethersulfone membranes using polyelectrolytes and AgCl/TiO 2 xerogels

Kaner

Johnson

Şeker

et al. 2015

Journal of Membrane Science

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a b s t r a c tIn this study, the layer-by-layer (LbL) assembly method was employed to modify a commercial polyethersulfone (PES) membrane by successive adsorption of chitosan and alginate as cationic and anionic polyelectrolytes. To enhance anti-biofouling property, pure, PEG mixed and PEGylated AgCl/TiO 2 xerogels were incorporated solely in the top layer of the LbL-modified membranes. Organic and biological foulings were addressed separately using alginate and Escherichia coli bacteria suspensions as the organic and biological model foulants, respectively. LbL-modifying the commercial PES membrane successively with chitosan and alginate polyelectrolyte multilayers prevented organic fouling extensively. In addition, we found that AgCl/TiO 2 -incorporated membranes show higher water permeability and improved resistance to biological fouling as compared to the PES membrane. Silver amounts in consecutively collected permeate samples were quantified by ICP-MS analysis to assess the stability of AgCl/TiO 2 -incorporated layers. Silver loss per filtration cycle followed an increasing trend initially, up to a filtration volume totaling 3000 L/m 2 , leading to 4.2% reduction in the immobilized silver amount. After that, silver loss per filtration cycle stabilized at $ 7.44 μg/L, which extrapolates to $ 265 days time-span for the remaining silver to be released at a filtration rate of $ 1000 L/m 2 h. Antibacterial activity tests showed that AgCl/TiO 2 -incorporated layers do not permit bacterial growth on the membrane surface.

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Section: Introductionmentioning

confidence: 99%

Layer-by-layer surface modification of polyethersulfone membranes using polyelectrolytes and AgCl/TiO 2 xerogels

Kaner

Johnson

Şeker

et al. 2015

Journal of Membrane Science

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“…By theory, the contact angle of hydrophilic UF membrane should be less in comparison with hydrophobic UF membrane when the membrane morphologies are similar (48). As shown in Table 1, it could be seen that the contact angle of the blended membranes decreased, which indicated the enhanced hydrophilicity due to the addition of PEG and FeON to PES.…”

Section: Characterization Of Pure and Composite Membranesmentioning

confidence: 89%

Polyethylene glycol and iron oxide nanoparticles blended polyethersulfone ultrafiltration membrane for enhanced performance in dye removal studies

Krishnamoorthy

Velu

2015

E-Polymers

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Ultrafiltration (UF) is one of the most widely used membrane technologies for the effective separation of macromolecules in feed solutions. However, despite good separation efficiency, the UF membranes made up of pure polymers suffer to a greater extent because of low flux problem, which affects the process time and load. To handle this limitation, the base polymer is blended with a suitable additive to modify the structural and surface morphology of the membrane to provide better fluxes. In this current study, a series of polyethersulfone (PES) UF asymmetric membranes blended with polyethylene glycol and iron oxide nanoparticles was prepared using the phase inversion technique. Prepared membranes were analyzed for their morphology, thermal stability, and membrane characterization. Morphology studies using scanning electron microscopy and atomic force microscopy confirmed the increase in the number of pores, pore size in support layer, and surface roughness in the blended membranes, ensuring the chances of enhanced flux. Surface hydrophilicity was increased with the increase in the iron oxide concentration in the composite membranes. Thermal analysis studies showed the better thermal stability of the blended membranes. Pure water flux of the prepared composite membranes was improved to a maximum of four times in comparison with pure PES membrane. Dye rejection studies clearly showed that the blended membranes almost had the same rejection as that of pure PES membrane. Thus, the prepared PES composite UF membrane is a promising candidate for the treatment of dyepolluted wastewater, ensuring high fluxes and effective rejection.

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“…This is due to the antibacterial property of the QA groups grafted onto the membrane surface. The bacteria were killed by a contact killing mechanism [35][36][37][38] when the bacteria were adsorbed on the membrane surface due to the attractive electrostatic force, because the E. coli has a negative charge and the PES-g-DMAEMAq membrane has a positive charge. From zeta potential measurements, the surface charge of the PES-g-DMAEMAq membrane was +35 mV (data not shown here).…”

Section: Observation Of Bacteria Attachmentmentioning

confidence: 99%

“…These positive charges could provide a bactericidal effect by a contact killing mechanism [20,21,[34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Surface Functionalization by Grafting (2-Dimethylamino)ethyl Methacrylate Methyl Chloride Quaternary Salt (DMAEMAq) onto Hollow Fiber Polyethersulfone (PES) Membranes for Improvement of Antibiofouling Properties

Razi

Sawada

Ohmukai

et al. 2012

SERDJ

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Surface modification of hollow fiber polyethersulfone (PES) membranes by UV irradiation induced graft polymerization of (2-dimethylamino)ethyl methacrylate (DMAEMAq) was developed. The grafted layers of the DMAEMAq monomer on the PES membrane surfaces were characterized using attenuated total reflectance Fourier transform infrared analysis and X-ray photoelectron spectroscopy. The performances of the modified PES membranes (PES-g-DMAEMAq) were investigated in terms of both organic fouling and biofouling. Filtration of bovine serum albumin (BSA) as a model protein and Pseudomonas putida (P. putida) as a model bacteria were carried out to evaluate organic antifouling and antibiofouling performances, respectively. The results showed that the membranes surface functionalized with the DMAEMAq monomer showed higher organic antifouling than unmodified PES membranes. A shaking flask test using P. putida also revealed that a PES-g-DMAEMAq membrane with a grafting amount of 4.8 mg/cm 2 showed higher biofouling resistance. That is, almost 99.9% of bacteria were killed by contact with the PES-g-DMAEMAq membrane. Thus, surface functionalization of PES membranes with the DMAEMAq monomer was quite useful for improving antibiofouling and organic antifouling properties.

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Development of reactive thin film polymer brush membranes to prevent biofouling

Cited by 69 publications

References 51 publications

Layer-by-layer surface modification of polyethersulfone membranes using polyelectrolytes and AgCl/TiO 2 xerogels

Layer-by-layer surface modification of polyethersulfone membranes using polyelectrolytes and AgCl/TiO 2 xerogels

Polyethylene glycol and iron oxide nanoparticles blended polyethersulfone ultrafiltration membrane for enhanced performance in dye removal studies

Surface Functionalization by Grafting (2-Dimethylamino)ethyl Methacrylate Methyl Chloride Quaternary Salt (DMAEMAq) onto Hollow Fiber Polyethersulfone (PES) Membranes for Improvement of Antibiofouling Properties

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