Multi spinnerets electrospinning with assistant sheath gas

Yu, Zhaojie; Lin, Yihong; Huang, Weiwei; Zhuang, Mingfeng; Hong, Yongmiao; Zheng, Guoqiang; Sun, Di

doi:10.1109/nems.2014.6908760

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…This has also been deemed helpful when dealing with volatile polymer solutions where the electric force remains the dominating factor while the gas‐blowing feature assists in controlling the flow. When several needles are used, the inclusion of a sheath gas in the design works by decreasing the surface charge density around the respective jets thus lessening the repulsion (Figure d) . This extra drawing force from the action of the jet has been reckoned as vital in reducing the average fiber diameter at the same time increasing their uniformity .…”

Section: Raising Nanofiber Throughputmentioning

confidence: 99%

Raising Nanofiber Output: The Progress, Mechanisms, Challenges, and Reasons for the Pursuit

Akampumuza

Gao

Zhang

et al. 2017

Macro Materials & Eng

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The paper discusses the extent to the scale of the electrospun fiber membrane. Literatures show that two distinct methods of raising electrospun nanofiber production can be employed via spinning from a setup of multiple nozzles arranged side by side or from an expanse of polymer solution (needleless electrospinning). Both of these methods are thoroughly explored by considering the variations available within either of their respective productivities. Their mechanisms are duly dealt with by looking at principles and parameters behind the process performances and an analysis of the strategies devised to deal with the shortcomings and ensure process feasibility is given. It has to be noted that most of the available work on electrospinning and their applications is achieved via single needle electrospinning. In this review, a projection is taken to be accomplished whether the nanofiber production can be consistently raised to commercial levels at the exceptional application routes so far produced by the conventional electrospinning means.

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Section: Raising Nanofiber Throughputmentioning

confidence: 99%

Raising Nanofiber Output: The Progress, Mechanisms, Challenges, and Reasons for the Pursuit

Akampumuza

Gao

Zhang

et al. 2017

Macro Materials & Eng

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“…This approach was also used to improve the nanofibrous product quality [27][28][29]. Even though, the last two abovementioned approaches are not specific for overcoming the mutual repulsion effect, the application of, so called, assistance of sheath gas was inspired and reported to be used in multi-jet electrospinning systems [30]. Process presented by Yu et al involves the application of air stream in the way similar to the solution blow spinning process -another method for nanofibers production [31] -where each spinneret is built in a way allowing the use of gas stream individually.…”

Section: E V E N T H O U G H T H E I N D U S T R I a L A P P L I C A mentioning

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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“…For example, needles can be arranged in one-or two-dimensional configuration. However, charged jets could interfere with each other and restrain jets injected from the spinneret, leading to low production efficiency [9,10]. The interference between the charged jets can be resolved by several methods.…”

Section: Multijets From Multineedle Electrospinningmentioning

confidence: 99%

Preparation of Nanofibers with Renewable Polymers and Their Application in Wound Dressing

Zhao

Qiu

Wang

et al. 2016

International Journal of Polymer Science

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Renewable polymers have attracted considerable attentions in the last two decades, predominantly due to their environmentally friendly properties, renewability, good biocompatibility, biodegradability, bioactivity, and modifiability. The nanofibers prepared from the renewable polymers can combine the excellent properties of the renewable polymer and nanofiber, such as high specific surface area, high porosity, excellent performances in cell adhesion, migration, proliferation, differentiation, and the analogous physical properties of extracellular matrix. They have been widely used in the fields of wound dressing to promote the wound healing, hemostasis, skin regeneration, and treatment of diabetic ulcers. In the present review, the different methods to prepare the nanofibers from the renewable polymers were introduced. Then the recent progress on preparation and properties of the nanofibers from different renewable polymers or their composites were reviewed; the application of them in the fields of wound dressing was emphasized.

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Multi spinnerets electrospinning with assistant sheath gas

Cited by 7 publications

References 14 publications

Raising Nanofiber Output: The Progress, Mechanisms, Challenges, and Reasons for the Pursuit

Raising Nanofiber Output: The Progress, Mechanisms, Challenges, and Reasons for the Pursuit

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

Preparation of Nanofibers with Renewable Polymers and Their Application in Wound Dressing

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