Electrospun Nanofibre Filter Media: New Emergent Technologies and Market Perspectives

Poudyal, Ankita; Beckermann, Gareth W.; Chand, Naveen Ashok; Hosie, I; Blake, Adam; Kannan, Bhuvaneswari

doi:10.1007/978-3-319-78163-1_9

Cited by 12 publications

(15 citation statements)

References 88 publications

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“…However, for particles in the submicron range, ES NF are considered better as they offer enhanced filtration performance. This is due to their high surface area and small pore diameter [ 17 ]. Electrospun NFs are characterised by a very large surface area, which significantly increases the probability of the particles depositing on the fibre surface, thereby improving the filter efficiency.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Nanofibre Filtration Media to Protect against Biological or Nonbiological Airborne Particles

Karabulut¹,

Höfler²,

Chand³

et al. 2021

Polymers

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Electrospun nanofibres can outperform their melt-blown counterparts in many applications, especially air filtration. The different filtration mechanisms of nanofibres are particularly important when it comes to the air filtration of viruses (such as COVID-19) and bacteria. In this work, we present an electrospun nanofibre filter media, FilterLayrTM by NanoLayr Ltd., containing poly(methyl methacrylate)/ethylene vinyl alcohol nanofibres. The outstanding uniformity of the nanofibres was indicated by the good correlation between pressure drop (ΔP) and areal weight with R2 values in the range of 0.82 to 0.98 across various test air velocities. By adjusting the nanofibre areal weight (basis weight), the nanofibre filter media was shown to meet the particle filtration efficiency and breathability requirements of the following internationally accepted facemask and respirator standards: N95 respirator facemask performance in accordance with NIOSH 42CFR84 (filtration efficiency of up to 98.10% at a pressure drop of 226 Pa and 290 Pa at 85 L·min−1 and 120 L·min−1, respectively), Level 2 surgical facemask performance in accordance with ASTM F2299 (filtration efficiency of up to 99.97% at 100 nm particle size and a pressure drop of 44 Pa at 8 L·min−1), and Level 2 filtration efficiency and Level 1 breathability for barrier face coverings in accordance with ASTM F3502 (filtration efficiency of up to 99.68% and a pressure drop of 133 Pa at 60 L·min−1), with Level 2 breathability being achievable at lower nanofibre areal weights.

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Section: Introductionmentioning

confidence: 99%

Electrospun Nanofibre Filtration Media to Protect against Biological or Nonbiological Airborne Particles

Karabulut¹,

Höfler²,

Chand³

et al. 2021

Polymers

Self Cite

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“…Many water filtration water bottles contain nanofiber membranes to effectively perform water purification. One such example is Liquidity's Naked Filter technology developed at MIT, made from electrospun PAN nanofibers for bacterial filtration at a 0.2 µm range [128]. It is also capable of removing protozoan cysts containing diseases, very beneficial for removal in developing countries.…”

Section: Past Industrial Achievements Of Electrospun Polymeric Membramentioning

confidence: 99%

Electrospun polymeric nanofibrous membranes for water treatment

Snowdon¹,

Liang²

2018

Preprint

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A necessity for water filtration technology, due to global pollution and population growth, has led to an increase in attention to advanced nanomaterials that can aid in the purification of air and water. This size-dependent filtration is possible via nanofibrous membranes as they contain high porosity and this pore size is tunable through the fabrication process. Because of this tunability in the nanofibril membrane composition and structure, they possess promising straining abilities, such as high permeability and selectivity, as well as low fouling. There are a variety of polymer blends or organic/inorganic nanofillers that can be used depending on filtration needs. The production of nanofibers consists of various avenues such as synthetic templates, separation by different phases, nanoparticle self-assembly, and most widespread, electrospinning. Electrospinning is prevalent owing to its ease of use and low cost compared to template and self- assembly processes. This chapter describes the multifaceted progression governing electrospinning and its working factors as well as the environmental settings that form nanofibers and their resultant membranes. Additionally, the various designs of electrospinning apparatuses' and review of the methods used to prepare multifunctional composite electrospun nanofibrous membranes will be discussed. Past achievements and current challenges will be provided. Conclusions and perspectives are specified fitting to studied progress so far as well as future needs with regards to water treatment, with a particular focus on industrial applications.

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“…Ultra-thin fibers possess large surface-to-volume ratios for diverse surface modifications through chemical engineering, resulting in different properties (e.g., surface charge, porosity, and stability) and can be applied in energy storage, 1 papermaking, 2 as well as air and water filtration industry. 3 Studies also pointed out the potential usages of fibers in biomedical fields as the fiber-shaped materials can be constructed using biocompatible and biodegradable polymers. 4 Notably, the porous nanofiber mats have been employed in biomedical applications, including antibacterial coating, 5 3D scaffold for tissue engineering applications, 6 medical diagnostic sensors, 7 drug delivery systems, 8 and pro-regenerative materials.…”

Section: Introductionmentioning

confidence: 99%

“…10 Several polymers have been utilized to fabricate electrospun fibers, such as poly(lactic-co-glycolic acid) (PLGA), 6 polyvinyl alcohol (PVA), 5 polycaprolactone (PCL), 9 and polyethylene oxide (PEO). 3 However, fibers produced from water-soluble polymers present low stability and easily lose the fiber morphology as they usually quickly dissolve in aqueous media.…”

Section: Introductionmentioning

confidence: 99%

“…Ultra‐thin fibers possess large surface‐to‐volume ratios for diverse surface modifications through chemical engineering, resulting in different properties (e.g., surface charge, porosity, and stability) and can be applied in energy storage, 1 papermaking, 2 as well as air and water filtration industry 3 . Studies also pointed out the potential usages of fibers in biomedical fields as the fiber‐shaped materials can be constructed using biocompatible and biodegradable polymers 4 .…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of water‐resistant, thermally stable, and antibacterial fibers through in situ multivalent crosslinking

Wang

Jovanska

Tsai

et al. 2022

J of Applied Polymer Sci

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Fibers are emerging materials for biomedical applications, including drug delivery, sensing, tissue engineering, and wound dressing. However, fibers produced from water-soluble polymers usually lose their morphology and quickly dissolve after exposure to water. Here, we developed a combined strategy of using multivalent crosslinkers along with in situ crosslinking to synthesize water-resistant and thermally stable hybrid fibers. In our design, polyvinyl alcohol (PVA), aldehyde-modified polyxylitol sebacate-co-polyethylene glycol (Ald_PXS-co-PEG, APP), and neomycin (Neo) were mixed to fabricate hybrid

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Electrospun Nanofibre Filter Media: New Emergent Technologies and Market Perspectives

Cited by 12 publications

References 88 publications

Electrospun Nanofibre Filtration Media to Protect against Biological or Nonbiological Airborne Particles

Electrospun Nanofibre Filtration Media to Protect against Biological or Nonbiological Airborne Particles

Electrospun polymeric nanofibrous membranes for water treatment

Fabrication of water‐resistant, thermally stable, and antibacterial fibers through in situ multivalent crosslinking

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