Influence of fiber diameter, filter thickness, and packing density on PM2.5 removal efficiency of electrospun nanofiber air filters for indoor applications

2020 ◽  
Vol 170 ◽  
pp. 106628 ◽  
Author(s):  
Ye Bian ◽  
Shijie Wang ◽  
Li Zhang ◽  
Chun Chen
Keyword(s):  
Removal Efficiency ◽  
Packing Density ◽  
Fiber Diameter ◽  
Electrospun Nanofiber ◽  
Air Filters ◽  
Filter Thickness

scholarly journals Electrospun Nylon-6 Nanofibers and Their Characteristics

2020 ◽  
Vol 9 (1) ◽  
pp. 9-19
Author(s):  
Ida Sriyanti ◽  
Meily P Agustini ◽  
Jaidan Jauhari ◽  
Sukemi Sukemi ◽  
Zainuddin Nawawi
Keyword(s):  
Fiber Diameter ◽  
Peak Shift ◽  
Nylon 6 ◽  
Electrospinning Process ◽  
Electrospinning Technique ◽  
Fiber Concentration ◽  
Air Filters ◽  
Xrd Pattern ◽  
Electrospinning Method ◽  
Small Wave

The purposes of this research were to investigate the synthesized Nylon-6 nanofibers using electrospinning technique and their characteristics. The method used in this study was an experimental method with a quantitative approach. Nylon-6 nanofibers have been produced using the electrospinning method. This fiber was made with different concentrations, i.e. 20% w/w (FN1), 25% w/w (FN2), and 30% w/w (FN3). The SEM results show that the morphology of all nylon-6 nanofibers) forms perfect fibers without bead fiber. Increasing fiber concentration from 20% w/w to 30% w/w results in bigger morphology and fiber diameter. The dimensions of the FN1, FN2, and FN3 fibers are 1890 nm, 2350 nm, and 2420 nm, respectively. The results of FTIR analysis showed that the increase in the concentration of nylon-6 (b) and the electrospinning process caused a peak shift in the amide II group (CH2 bond), the carbonyl group and the CH2 stretching of the amide III group from small wave numbers to larger ones. The results of XRD characterization showed that the electrospinning process affected the changes in the XRD pattern of nylon-6 nanofiber (FN1, FN2, and FN3) in the state of semi crystal. Nylon-6 nanofibers can be used for applications in medicine, air filters, and electrode for capacitors

Controlling the porosity of fibrous scaffolds by modulating the fiber diameter and packing density

2011 ◽  
Vol 96A (3) ◽  
pp. 566-574 ◽  
Author(s):  
Sherif Soliman ◽  
Shilpa Sant ◽  
Jason W. Nichol ◽  
Masoud Khabiry ◽  
Enrico Traversa ◽  
...  
Keyword(s):  
Packing Density ◽  
Fiber Diameter ◽  
Fibrous Scaffolds

scholarly journals Elaboration of High Permeable Macrovoid Free Polysulfone Hollow Fiber Membranes for Air Separation

Fibers ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 43 ◽  
Author(s):  
George Dibrov ◽  
Mikhail Ivanov ◽  
Mikhail Semyashkin ◽  
Vladislav Sudin ◽  
Nikita Fateev ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Packing Density ◽  
Fiber Diameter ◽  
Hollow Fiber Membrane ◽  
Air Separation ◽  
Solution Temperature ◽  
Separation Performance ◽  
Practical Application ◽  
Membrane Area ◽  
Dope Solution

In this work, polysulfone hollow fibers with oxygen permeance 70 L (STP)/(m2·h·bar) and selectivity α(O2/N2) = 6 were obtained. A decrease in the dope solution temperature allowed to diminish macrovoids due to the increase of the dope viscosity from 15.5 Pa·s at 62 °C to 35 Pa·s at 25 °C. To reduce the fiber diameter, thereby increasing the packing density, they were spun at high linear velocities. A hollow fiber membrane element was produced with effective membrane area 2.75 m2 and packing density 53%. Its air separation performance was evaluated to bridge laboratory studies and practical application.

scholarly journals Investigation of the Fiber, Bulk, and Surface Properties of Meltblown and Electrospun Polymeric Fabrics

2004 ◽  
Vol os-13 (3) ◽  
pp. 1558925004os-13
Author(s):  
Peter P. Tsai ◽  
WeiWei Chen ◽  
J. Reece Roth
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fiber Diameter ◽  
Electrospinning Process ◽  
Electrospun Fibers ◽  
Microscopic Structure ◽  
Electrospun Nanofiber ◽  
Sem Images ◽  
Nylon Fabric ◽  
Scanning Electron

We measured and compared the properties of meltblown and electrospun fabrics made of nylon and polyurethane (PU). Properties of interest included surface energy/wettability, strength, fiber diameter, and microscopic structure as revealed by scanning electron microscopy (SEM). We also report new data on the diameters of electrospun fibers measured from digitized SEM images of electrospun nylon, polyurethane (PU), polyacrylonitrile (PAN), polycaprolactone (PCL), and polycarbonate (PC) fabrics. The electrospinning process produced fibers with diameters in the range from 10 nm to several microns. It was found that the strength per unit areal weight of electrospun nanofiber nylon fabric was up to ten times that of the meltblown material, and for polyurethane (PU) fabric, from 2.5–3 times that of the melt-blown material.

Optical Properties of Electrospun Nanofiber Substrates

2009 ◽  
Vol 1240 ◽  
Author(s):  
Lynn Davis ◽  
Howard J Walls ◽  
Karmann C. Mills ◽  
Kim Guzan ◽  
Robert Yaga ◽  
...  
Keyword(s):  
Fiber Diameter ◽  
Index Of Refraction ◽  
Substrate Thickness ◽  
Electrospun Nanofiber ◽  
Fiber Morphology ◽  
Fiber Packing Density ◽  
Light Management ◽  
Physical Effects ◽  
End Use ◽  
Fabrication Parameters

AbstractLight impinging upon electrospun nanofiber substrates encounters a complex media where a multitude of factors controls the transmittance and reflectance of light through the structure. The chemical composition of the nanofiber plays a significant role in that it determines the index of refraction of individual fibers. However, the surrounding media (e.g., air, encapsulating polymer, etc.) also plays an equally important role. In addition, physical effects such as fiber diameter, fiber morphology, fiber packing density (i.e., structure void volume), and substrate thickness play a large role in determining the light management properties of nanofibers. Our research has demonstrated that the transmittance and reflectance of undoped nanofibers can be adjusted through proper manipulation of these factors. For example, similar electrospinning formulations can produce either highly transmitting or highly reflecting light structures depending upon fabrication parameters that impact the final properties of the nanofiber substrates. In addition, a degree of wavelength dependent reflectance and transmittance can be imparted simply by adjusting the physical properties of the nanofibers to promote preferential light scattering below selected frequencies. This paper provides an overview of various factors impacting the light management properties of nanofiber substrates and the importance of controlling these factors to meet end-use applications.

“Green” nano-filters: fine nanofibers of natural protein for high efficiency filtration of particulate pollutants and toxic gases

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105948-105956 ◽  
Author(s):  
Hamid Souzandeh ◽  
Yu Wang ◽  
Wei-Hong Zhong
Keyword(s):  
Removal Efficiency ◽  
High Efficiency ◽  
Air Filters ◽  
Natural Protein ◽  
Toxic Gases ◽  
Particulate Pollutants

By combining the significant properties of nanofibers and the multi-functionality of pure proteins, “green” multifunctional air-filters with high removal efficiency of particulates and toxic gases is achieved.

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