Biofouling suppression of modified feed spacers: Localized and long-distance antibacterial activity

Ronen, Avner; Resnick, Ayal; Lerman, Sofia; Eisen, Moris S.; Dosoretz, Carlos G.

doi:10.1016/j.desal.2015.07.004

Cited by 12 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More recently, researchers have focused on the surface chemistry of the feed spacers. Multiple studies have considered anti-fouling coatings; however, these are more likely to wear out over time [ 150 , 151 , 152 , 153 , 154 ]. The solution proposed by Siddiqui et al considered the native anti-fouling properties of 3D-printed materials.…”

Section: Anti-fouling Methods and Materialsmentioning

confidence: 99%

Emerging Anti-Fouling Methods: Towards Reusability of 3D-Printed Devices for Biomedical Applications

Lepowsky

2018

Micromachines

View full text Add to dashboard Cite

Microfluidic devices are used in a myriad of biomedical applications such as cancer screening, drug testing, and point-of-care diagnostics. Three-dimensional (3D) printing offers a low-cost, rapid prototyping, efficient fabrication method, as compared to the costly—in terms of time, labor, and resources—traditional fabrication method of soft lithography of poly(dimethylsiloxane) (PDMS). Various 3D printing methods are applicable, including fused deposition modeling, stereolithography, and photopolymer inkjet printing. Additionally, several materials are available that have low-viscosity in their raw form and, after printing and curing, exhibit high material strength, optical transparency, and biocompatibility. These features make 3D-printed microfluidic chips ideal for biomedical applications. However, for developing devices capable of long-term use, fouling—by nonspecific protein absorption and bacterial adhesion due to the intrinsic hydrophobicity of most 3D-printed materials—presents a barrier to reusability. For this reason, there is a growing interest in anti-fouling methods and materials. Traditional and emerging approaches to anti-fouling are presented in regard to their applicability to microfluidic chips, with a particular interest in approaches compatible with 3D-printed chips.

show abstract

Section: Anti-fouling Methods and Materialsmentioning

confidence: 99%

Emerging Anti-Fouling Methods: Towards Reusability of 3D-Printed Devices for Biomedical Applications

Lepowsky

2018

Micromachines

View full text Add to dashboard Cite

show abstract

“…A flow-through cells system with internal recirculation operating in continuous mode was used to test permeability and antibacterial activity of the C-80 CNT membranes. Flow conditions and experimental set-up were as described in our previous works [3,30]. Antibacterial tests were performed comparatively to polysulfone (Psf) 200 KDa UF membranes (ymersp3001, GE Osmonics) under conditions encouraging biofouling.…”

Section: Flow-through Experimentsmentioning

confidence: 99%

Characterization of a support-free carbon nanotube-microporous membrane for water and wastewater filtration

Thamaraiselvan

Lerman

Weinfeld-Cohen

et al. 2018

Separation and Purification Technology

Self Cite

View full text Add to dashboard Cite

Nonwoven carbon nanotube (CNT) laminates were characterized as support-free membranes for water filtration in terms of structural morphology, water permeability, selectivity and chemical resistance. Nominal pore rating (12-23 nm) estimated by rejection of globular proteins and fluorescence beads fall within the selectivity range of tight ultrafiltration (UF) membranes applied for wastewater treatment. The membranes displayed high permeability (120-400 LMH/bar). High selectivity regardless of high permeability seems to be due to tortuosity and pore structure of the membranes (25-50 μm thickness). The chemical stability of the membranes was tested towards common chemicals used for membrane cleaning (HCl, NaOH, NaClO) but at much severe conditions (24 h exposure at 4-10 fold higher concentrations). High resolution-Xray photoelectron spectroscopy (XPS) was applied to evaluate chemical resistance. The relative C/O-carbon to oxygen ratio and typical deconvolution curves of C1s lines of the membranes after 24 h exposure depicted no significant changes compared to the reference samples, confirming resistance to chemical oxidation. This combination of features, added to simplicity of fabrication and post-synthesis modification and support-free configuration that enhances chemical stability, offer a worthwhile opportunity of application of these dense-array outerwalled CNT membranes in the UF range, especially at harsh conditions such as wastewater treatment.

show abstract

“… 19 Ronen et al studied that antibacterial spacer was produced by grafting polymeric quaternary ammonium by ATRP, which displayed a localized antibacterial activity by direct contact. 20 By this way, RATRP makes up two major drawbacks of ATRP, that is, the toxicity of the halide species RX and the oxidation of the catalyst M t n /LX by oxygen in the air.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a novel antibacterial material containing poly(sulfobetaine) using reverse atom transfer radical polymerization

et al. 2018

View full text Add to dashboard Cite

show abstract

Biofouling suppression of modified feed spacers: Localized and long-distance antibacterial activity

Cited by 12 publications

References 28 publications

Emerging Anti-Fouling Methods: Towards Reusability of 3D-Printed Devices for Biomedical Applications

Emerging Anti-Fouling Methods: Towards Reusability of 3D-Printed Devices for Biomedical Applications

Characterization of a support-free carbon nanotube-microporous membrane for water and wastewater filtration

Synthesis and characterization of a novel antibacterial material containing poly(sulfobetaine) using reverse atom transfer radical polymerization

Contact Info

Product

Resources

About