Effect of electrospinning parameters on the air filtration performance using electrospun polyamide-6 nanofibers

Aliabadi, Majid

doi:10.2298/ciceq160509059a

Cited by 14 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known for traditional air filter media that high filtration efficiency is typically only achieved for thicker materials or at higher areal weights. This is not necessarily the case for NF filter media, where a comparatively low areal weight is required for high filtration performance whilst still maintaining a low pressure drop [ 33 , 35 , 36 ]. In this study, a series of samples was prepared in order to investigate the optimum NF areal weight to achieve the best filtration efficiency whilst still maintaining a low pressure drop (breathing resistance).…”

Section: Resultsmentioning

confidence: 99%

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

Karabulut¹,

Höfler²,

Chand³

et al. 2021

Polymers

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Karabulut¹,

Höfler²,

Chand³

et al. 2021

Polymers

View full text Add to dashboard Cite

show abstract

“…It is known that when the basis weight is increased in filters, dramatic changes in filter efficiency may occur, especially for nanofibrous filters, where a low basis weight is required for high filtration performance and low pressure drop [ 16 , 20 , 37 , 38 ]. In fact, the use of nanofibers in air filtration applications requires much less basis weight than the microfibrous-based filters [ 11 , 16 , 39 ] and hence, the optimum basis weight of PAN fibers to obtain a high filter efficiency and low breathing resistance was investigated ( Figure 3 A). To do this, a mass deposition of nanofibers ranging from 0.1–1 g/m 2 were deposited on an SPP by electrospinning.…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial Nanofiber Based Filters for High Filtration Efficiency Respirators

Pardo-Figuerez

Chiva-Flor²,

Figueroa-López

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

Electrospinning has been used to develop and upscale polyacrylonitrile (PAN) nanofibers as effective aerosol filtration materials for their potential use in respirators. The fibers were deposited onto non-woven spunbond polypropylene (SPP) and the basis weight (grammage, g/m2) was varied to assess the resulting effect on filtration efficiency and breathing resistance of the materials. The results indicated that a basis weight in excess of 0.4 g/m2 of PAN electrospun fibers yielded a filtration efficiency over 97%, with breathing resistance values that increased proportionally with the amount of basis weight added. With the aim of retaining filter efficiency whilst lowering breathing resistance, the basis weight of 0.4 g/m2 and 0.8 g/m2 of PAN electrospun fibers were strategically split up and stacked with SPP in different configurations. The results suggested that a symmetric structure based on SPP/PAN/PAN/SPP was the optimal structure, as it reduces SPP consumption while maintaining an FFP2-type of filtration efficiency, while reducing breathing resistance, specially at high air flow rates, such as those mimicking FFP2 exhalation conditions. The incorporation of zinc oxide (ZnO) nanoparticles within the electrospun nanofibers in the form of nanocomposites, retained the high filtration characteristics of the unfilled filter, while exhibiting a strong bactericidal capacity, even after short contact times. This study demonstrates the potential of using the symmetric splitting of the PAN nanofibers layer as a somewhat more efficient configuration in the design of filters for respirators.

show abstract

“…Co-solvent utilization improved the highly ordered homogenous fibers with a smoother Various factors influence the formation of bead free smooth nanofibrous structures such as spinning condition, polymer solution, and environmental conditions. The spinning condition includes the distance between the needle and collector, flow rate, needle diameter, and applied voltage [42][43][44][45]. The distance between needle and the collector crucially alters the flight time governing the solvent evaporation with considerable effects on the nanofibers (NFs) diameter [46].…”

Section: Electrospinning Techniquementioning

confidence: 99%

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

et al. 2020

View full text Add to dashboard Cite

Conjugated copolymers (CCPs) are a class of polymers with excellent optical luminescent and electrical conducting properties because of their extensive π conjugation. CCPs have several advantages such as facile synthesis, structural tailorability, processability, and ease of device fabrication by compatible solvents. Electrospinning (ES) is a versatile technique that produces continuous high throughput nanofibers or microfibers and its appropriate synchronization with CCPs can aid in harvesting an ideal sensory nanofiber. The ES-based nanofibrous membrane enables sensors to accomplish ultrahigh sensitivity and response time with the aid of a greater surface-to-volume ratio. This review covers the crucial aspects of designing highly responsive optical sensors that includes synthetic strategies, sensor fabrication, mechanistic aspects, sensing modes, and recent sensing trends in monitoring environmental toxicants, pH, temperature, and humidity. In particular, considerable attention is being paid on classifying the ES-based optical sensor fabrication to overcome remaining challenges such as sensitivity, selectivity, dye leaching, instability, and reversibility.

show abstract

Effect of electrospinning parameters on the air filtration performance using electrospun polyamide-6 nanofibers

Cited by 14 publications

References 11 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

Antimicrobial Nanofiber Based Filters for High Filtration Efficiency Respirators

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

Contact Info

Product

Resources

About