Controlling Fiber Repulsion in Multijet Electrospinning for Higher Throughput

Kumar, Arun; Wei, Ming; Barry, Carol L.; Chen, Julie; Mead, Joey

doi:10.1002/mame.200900425

Cited by 59 publications

(38 citation statements)

References 23 publications

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“…Recently reported modifications of multi-jet electrospinning (MES) systems in order to overcome the mutual repulsion effect of polymer solution jets include application of additional electrodes, auxiliary electrodes and specifically designed polymer nozzles arrays [21,24,34]. Most of those approaches result in the complex design of the system and/or complex modeling of electrostatic field and flow patterns in order to optimize the nozzles array of the multi-jet electrospinning system.…”

Section: Discussionmentioning

confidence: 99%

Blow-assisted multi-jet electrospinning of poly-L-lactic acid nanofibers

2017

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Regardless the low production rate, electrospinning remains the attractive technique for the nanofibers production in various fields. Thus, the development of a multi-jet technologies for electrospinning gives an opportunity to scale up and increase throughput of the fibers production. However, the multi-jet electrospinning technologies exhibit one major drawback-electrostatic mutual jet repulsion issue. In present research, we propose air blow-assisted multi-jet electrospinning system allowing production of nanofibers with yield, at least, tenfold higher than single jet electrospinning. The system produces nanofibers in two modes: multi-jet electrospinning and blow-assisted multi-jet electrospinning. In case of the latter, the application of sheath air stream allows the system to overcome the electrostatic mutual repulsion issue. These lead to the reduction of deviation of the polymer solution jets, the reduction of instabilities of the jets and the improvement of the control of the nanofibers deposition. Nanofibers morphology and size were investigated based on the scanning electron microscope micrographs. The comparison of the two modes shows changes in nanofibers morphology from beaded structure to fine nanofibers, and the slight increase in fiber mean size when the blowing assistance was applied to the process.

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Section: Discussionmentioning

confidence: 99%

Blow-assisted multi-jet electrospinning of poly-L-lactic acid nanofibers

2017

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“…The needleless process is divided into two categories depending on the feeding system: confined feeding and unconfined feeding. The difference between the confined and unconfined needleless electrospinning is the fact that in confined electrospinning the electrospun fluid is enclosed in a reservoir such as an insulating tube [98,104,105] or any other material in which the polymer is protruded, whereas in unconfined systems there is no reservoir for the spinning solution and the droplets are projected naturally from the surface of the solution. The replacement of the needles in multi-jet spinning is the most convenient way to resolve the complexity and difficulties without compromising the mass throughput [92,99].…”

Section: Needleless Electrospinning 421 Confined Needleless Electrmentioning

confidence: 99%

A review on electrospun bio-based polymers for water treatment

Mokhena¹,

Jacobs²,

Luyt³

2015

Express Polym. Lett.

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Abstract. Over the past decades, electrospinning of biopolymers down to nanoscale garnered much interest to address most of the millennia issues related to water treatment. The fabrication of these nanostructured membranes added a new dimension to the current nanotechnologies where a wide range of materials can be processed to their nanosize. Electrospinning is a simple and versatile technique to fabricate unique nanostructured membranes with fascinating properties for a wide spectrum of applications such as filtration and others. These nanostructured membranes, fabricated by electrospinning, were found to be of a paramount importance because of their advanced inherited properties such as large surface-to-volume ratio, as well as tuneable porosity, stability, and high permeability. The extensive research conducted on these materials extended the success of electrospinning not only to bio-based polymer nanofibres, but to their hybrids and their derivatives. The technique also created avenues for advanced and massive production of nanofibres. This paper reviews the recent developments in the electrospinning technique. Electrospinning of biopolymers, their blends and functionalization using metals/metal oxides, and the potential applications of electrospun nanofibrous membranes in water filtration are discussed.

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“…Using microfluidic channels, Srinivasta et al [16] have demonstrated intricate janus architecture nanofibers, but Open Access *Correspondence: sfang@ufl.edu; ykyoon@ece.ufl.edu 1 Electrical and Computer Engineering, University of Florida, 225 Larsen Hall, Gainesville, FL 32611-6200, USA Full list of author information is available at the end of the article the open channel approach has lowered throughput to 0.1 g/h with 8 nozzles. Also, drilled holes in plastic films [17] and drilled holes into syringe filters [18] have been reported. But these approaches suffer from non-uniformity in nanofiber diameter or not quite scalable.…”

Section: Introductionmentioning

confidence: 99%

Study on high throughput nanomanufacturing of photopatternable nanofibers using tube nozzle electrospinning with multi-tubes and multi-nozzles

Fang

Jao

Senior

et al. 2017

Micro and Nano Syst Lett

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High throughput nanomanufacturing of photopatternable nanofibers and subsequent photopatterning is reported. For the production of high density nanofibers, the tube nozzle electrospinning (TNE) process has been used, where an array of micronozzles on the sidewall of a plastic tube are used as spinnerets. By increasing the density of nozzles, the electric fields of adjacent nozzles confine the cone of electrospinning and give a higher density of nanofibers. With TNE, higher density nozzles are easily achievable compared to metallic nozzles, e.g. an inter-nozzle distance as small as 0.5 cm and an average semi-vertical repulsion angle of 12.28° for 8-nozzles were achieved. Nanofiber diameter distribution, mass throughput rate, and growth rate of nanofiber stacks in different operating conditions and with different numbers of nozzles, such as 2, 4 and 8 nozzles, and scalability with single and double tube configurations are discussed. Nanofibers made of SU-8, photopatternable epoxy, have been collected to a thickness of over 80 μm in 240 s of electrospinning and the production rate of 0.75 g/h is achieved using the 2 tube 8 nozzle systems, followed by photolithographic micropatterning. TNE is scalable to a large number of nozzles, and offers high throughput production, plug and play capability with standard electrospinning equipment, and little waste of polymer.

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Controlling Fiber Repulsion in Multijet Electrospinning for Higher Throughput

Cited by 59 publications

References 23 publications

Blow-assisted multi-jet electrospinning of poly-L-lactic acid nanofibers

Blow-assisted multi-jet electrospinning of poly-L-lactic acid nanofibers

A review on electrospun bio-based polymers for water treatment

Study on high throughput nanomanufacturing of photopatternable nanofibers using tube nozzle electrospinning with multi-tubes and multi-nozzles

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