High-performance filter membrane composed of oxidized Poly (arylene sulfide sulfone) nanofibers for the high-efficiency air filtration

Wei, Zhimei; Su, Qing; Yang, Jie; Zhang, Gang; Long, Shengru; Wang, Xiaojun

doi:10.1016/j.jhazmat.2021.126033

Cited by 46 publications

(17 citation statements)

References 36 publications

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“…This deficiency may be addressed with the use of high-temperature resistant polymers or composite fiber. PMIA, 37,91 oxidized poly (arylene sulfide sulfone) (O-PASS), 38 carbon nanotube (CNT), 92 and polyimide (PI) 50 are all high-temperature resistance polymers. Furthermore, the nanofiber diameter is very small, so the filter media is too thin to provide sufficient strength.…”

Section: Discussionmentioning

confidence: 99%

“…This slip effect causes the nanofibers to have very low airflow resistance 29 . Nanofiber materials prepared by electrospinning have been used in window screens, 29–34 face masks, 31,35,36 and other air filtration applications 37–40 . The use of electrospinning and other processes can provide a flexible structural and functional design of nanofibers 41 .…”

Section: Introductionmentioning

confidence: 99%

“…29 Nanofiber materials prepared by electrospinning have been used in window screens, [29][30][31][32][33][34] face masks, 31,35,36 and other air filtration applications. [37][38][39][40] The use of electrospinning and other processes can provide a flexible structural and functional design of nanofibers. 41 The spinning parameters can be adjusted to produce bead-on-string, 42,43 branch, 44 microsphere, 45 honeycomb-like and Steiner-tree 46,47 structures, in addition to super-amphiphobic, 48 antibacterial, 40,49 flame-retardant, 50,51 and high-strength 46,52,53 properties.…”

Section: Introductionmentioning

confidence: 99%

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HEPA filters for airliner cabins: State of the art and future development

Zhang

Liu

et al. 2022

Indoor Air

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The airliner cabin environment is very important to the health of passengers and crew members, and the use of high-efficiency particulate air (HEPA) filters for recirculated air in the environmental control systems (ECS) is essential for the removal of airborne particles such as SARS CoV-2 aerosols. A HEPA filter should be high efficiency, lowpressure drop, high dust-holding capacity (DHC), lightweight, and strong for use in aircraft. We conducted an experimental study on 23 HEPA filters with glass fiber media that are used in different commercial airliner models. The tested filters had a median filtration efficiency of >99.97% for particles with a diameter of 0.3-0.5 μm, a pressure drop of 134-412 Pa at rated airflow rate, and a DHC of 32.2-37.0 g/m 2 . The use of nanofiber media instead of glass fiber media can reduce the pressure drop by 66.4%-94.3% and significantly increase the quality factor by analysis of literature data. The disadvantages of poor fire resistance and small DHC can be overcome by the use of flame-retardant polymers and fiber structural design. As a new lightweight and environmentally friendly filter material, nanofiber media could be used as air filters in ECS in the future.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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HEPA filters for airliner cabins: State of the art and future development

Zhang

Liu

et al. 2022

Indoor Air

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“…The amount of pollutants can be expressed as mass, particle count, or volume. The filtration efficiency was determined using eq , where C and C 0 are the number of particles before and after filtration. , Filtration efficiency is represented as η = ( 1 − C C 0 ) × 100 QF was calculated using eq , where QF (Pa –1 ) represents the quality factor, η is the filtering efficiency (selectivity), and Δ P (Pa) is the pressure drop Q normalF = ln ( 1 − n ) / normalΔ P …”

Section: Methodsmentioning

confidence: 99%

Fabrication and Application of Halloysite Nanotube-Embedded Photocatalytic Nanofibers with Antibacterial Properties

et al. 2022

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With decreasing indoor air quality, increased time spent at indoors, and especially with the COVID-19 pandemic, the development of new materials for bacteria and viruses has become even more important. Less material consumption due to the electrospinning process, the easy availability/affordability of the halloysite nanotube (HNT), and the antibacterial effect of both TiO 2 and ZnO nanoparticles make the study even more interesting. HNTs have attracted research attention in recent years due to their low cost, high mechanical strength, natural and environmentally friendly structure, and non-toxicity to human health and ecosystem. In this study, HNT-embedded composite nanofiber filters were fabricated as filter materials using the electrospinning method. Photocatalysts (TiO 2 and ZnO) were incorporated into the composite nanofibers by the electrospraying method. The results showed that the combination of both HNT/TiO 2 and HNT/ZnO additives was successfully integrated into the filter structure. The effect of embedding the HNT and spraying photocatalysts enables the fabrication of composite filters with lower pressure drop, high filtration efficiency, improved mechanical properties, and high antibacterial properties against Escherichia coli, making the nanofibers suitable and promising for face masks and air filter materials.

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“…Nanofibers are among a number of materials that have recently received considerable attention in the fields of both basic and applied research. They enjoy a huge application potential, and their range of use is constantly expanding, especially in the fields of protective textiles [1], tissue engineering [2][3][4], medicine [5], the production of multispecies materials, energy [6,7], air filtration [8][9][10], contaminated water [11,12] and other substances [13], analytical chemistry [14], etc. [15].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Spinneret Rotation Speed and Airflow Parameters for the Nozzleless Forcespinning of a Polymer Solution

et al. 2022

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This paper addresses the changing of the process parameters of nozzleless centrifugal spinning (forcespinning). The primary aim of this study was to determine the dependence of the final product on the dosing of the polymer, the rotation speed of the spinneret and the airflow in order to determine the extent of the technological applicability of aqueous polyvinyl alcohol (PVA) and its modifications. PVA was chosen because it is a widely used polymeric solution with environmentally friendly properties and good biodegradability. It is used in the health care and food packaging sectors. The nanofibrous layers were produced by means of a mobile handheld spinning device of our own construction. This mobile application of the spinning machine has several limitations compared to stationary laboratory equipment, mainly due to dimensional limitations. The uniqueness of our device lies in the possibility of its actual use outside the laboratory. In addition to improved mobility, another exciting feature is the combination of nozzleless forcespinning and fiber application using airflow. Dosing, the rotation speed of the spinnerets and the targeted and controlled use of air comprise the fundamental technological parameters for many devices that operate on a centrifugal force system. The rotation rate of the spinnerets primarily affects the production of fibers and their quality, while the airflow acts as a fiber transport and drying medium. The quality of the fibers was evaluated following the preparation of a testing set for the fiber layers. The most suitable combinations of rotation speed and airflow were then used in subsequent experiments to determine the ideal settings for the device. The solution was then modified by reducing the concentration to 16% and adding a surfactant, thus leading to a reduction in the diameters of the resulting fibers. The nanofiber layers so produced were examined using a scanning electron microscope (SEM) in order to analyze the number of defects and to statistically evaluate the fiber diameters.

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High-performance filter membrane composed of oxidized Poly (arylene sulfide sulfone) nanofibers for the high-efficiency air filtration

Cited by 46 publications

References 36 publications

HEPA filters for airliner cabins: State of the art and future development

HEPA filters for airliner cabins: State of the art and future development

Fabrication and Application of Halloysite Nanotube-Embedded Photocatalytic Nanofibers with Antibacterial Properties

Optimization of the Spinneret Rotation Speed and Airflow Parameters for the Nozzleless Forcespinning of a Polymer Solution

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