Needleless electro-spun nanofibers used for filtration of small particles

Li, J.; Gao, Feng; Liu, L. Q.; Zhang, Z.

doi:10.3144/expresspolymlett.2013.65

Cited by 61 publications

(32 citation statements)

References 25 publications

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“…As the nanofibers prepared by electro spinning have various advantages, including smaller diameter, larger specific surface area, and unique network, they have been widely used in biomedicine (bone braces, drug controlled release and tissue template) (1-5), separation and filtration of materials (6)(7)(8), adsorption of materials (9), photocatalyst (10), biocells (11,12) and other areas. In addition, more studies focus on the preparation of the phase change nanofibers via electro spinning in recent years.…”

Section: Introductionmentioning

confidence: 99%

On Preparation and Characterization of the Phase Change Nanofibers From the Copolymer of Poly(styrene-co-acrylonitrile) and Lauric Acid

Guo

Zhang

et al. 2015

Journal of Macromolecular Science, Part A

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The phase change nanofibers are prepared via electro spinning with the poly(styrene-co-acrylonitrile) (SAN) as carriers and the lauric acid (LA) as the phase change materials (PCMs). The content of the solution, the solubilizer palmitic acid (PA) and the parameters of the electro spinning vary with the favorable conditions of electro spinning. Research has been conducted: the analysis of intermolecular forces between SAN and LA by the infra-red spectra; the examination of the densities of SAN and LA, the voltage and distance of the electro spinning, and the impact of the solubilizers exerting on the form of the phase change nanofibers by SEM; the research on the thermal storage and the crystal structure of the nanofibers by differential scanning calorimetry (DSC) and X-ray diffraction (XRD) and the observance of the melting and crystallization of the nanofibers with the polarized optical microscopy (POM). Conclusions are reached as follows: first, the intermolecular forces do exist between the SAN and LA because the blending is physical; second, the nanofibers have moderate temperature, enthalpy of phase transition and good ability to store thermal energy; in addition, the crystal structure of the nanofibers, compared with that of LA, experiences changes. Moreover, it is because the leakage of LA doesn't happen in SAN during the phase transition that the crystal of the nanofibers can remain solid.

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Section: Introductionmentioning

confidence: 99%

On Preparation and Characterization of the Phase Change Nanofibers From the Copolymer of Poly(styrene-co-acrylonitrile) and Lauric Acid

Guo

Zhang

et al. 2015

Journal of Macromolecular Science, Part A

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“…Because of their unique properties of the electrospun nanobers such as high surface area, high aspect ratio, good mechanical properties and the ability to incorporate multifunctional nanoparticles in the bers, the resulting product can be an excellent lter medium for air and water contaminants purication. [8][9][10][11][12][13][14][15] The main difficulties focus on the high throughput, functionalization and ber diameter reduction, while maintaining nanobers stability. Chitosan is recognized as the second most globally abundant natural polysaccharide aer cellulose.…”

Section: Introductionmentioning

confidence: 99%

Needleless electrospinning for scaled-up production of ultrafine chitosan hybrid nanofibers used for air filtration

et al. 2016

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Large scale ultrafine chitosan hybrid nanofibers containing TiO 2 and/or Ag nanoparticles were prepared using a needleless electrospinning method. The nanofiber production rate reached 50 g h À1 using the needleless electrospinning method, which was much higher than 0.02-1 g h À1 in the traditional single needle electrospinning method. By optimizing the spinning parameters, nanofibers with a smooth uniform morphology were obtained with diameters ranging from 25 to 60 nm and Ag nanoparticles with an average size of 2.9 nm were deposited on the surface of the nanofibers without aggregation. The hybrid nanofibers exhibited a significant increase in filtration efficiency (>99%) for removal of nanoparticle aerosols, comparable to commercial high-efficiency particulate air filters, but with a lower pressure drop and less mess. The chitosan hybrid nanofibers showed excellent antibacterial activity, e.g.97% of E. coli and 99% of S. aureus were killed within 2 h. The cross-linked nanofibers exhibited excellent water durability and maintained a stable microstructure in high humidity and in water immersion. Daily productivity can be above 1.2 kg, which makes these ultrafine nanofibers suitable for the application of wound dressing, air filtration and environmental purification.

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“…Recently, needleless electrospinning technique appeared with the aim of producing nanofibers on a large scale [56,57]. Li et al [58] prepared PVA nanofibers with an average fiber diameter of 100 nm using needleless electrospinning technique. The filtration performance of PVA/PP composite filter was evaluated by measuring the filtration of NaCl particles (75˙20 nm) through the filters.…”

Section: Poly(vinyl Alcohol) (Pva)mentioning

confidence: 99%

Electrospun Nanofibers for Air Filtration

Wang

Mao

Zhang

et al. 2014

Nanostructure Science and Technology

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Fine particle pollution resulting from the rapid urbanization and industrialization is one of the most serious sources of air pollution. In response to the recognized threats of fine particles to the environment and human bodies, the pursuit of novel, high-performance, energy saving, and environmentally friendly filter medium has gained great interest in recent years. Electrospun nanofibrous membranes, as one of the utmost promising and versatile filter media for fine particle filtration, possess several fascinating features such as remarkable specific surface area, high open porosity, and interconnected porous structure. More significantly, electrospun nanofiber-based filter media are expected to have extremely high filtration efficiency for fine particle and relatively low pressure drop due to the unique structure of electrospun nanofibers. In this chapter, we summarize the recent progress in the development of electrospun nanofibrous membranes (e.g., organic, hybrid, inorganic) for fine particle filtration, describe the types of nanofibrous materials that have been developed, and discuss their structure variables and particle filtration performance in detail. This chapter may trigger the development of advanced nanofibrous filter media for fine particle emissions from anthropogenic polluted atmosphere.

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Needleless electro-spun nanofibers used for filtration of small particles

Cited by 61 publications

References 25 publications

On Preparation and Characterization of the Phase Change Nanofibers From the Copolymer of Poly(styrene-co-acrylonitrile) and Lauric Acid

On Preparation and Characterization of the Phase Change Nanofibers From the Copolymer of Poly(styrene-co-acrylonitrile) and Lauric Acid

Needleless electrospinning for scaled-up production of ultrafine chitosan hybrid nanofibers used for air filtration

Electrospun Nanofibers for Air Filtration

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