High-throughput free surface electrospinning using solution reservoirs with different radii and its preparation mechanism study

Ahmed, Adnan; Yin, Jing; Xu, Liang; Khan, Fawad

doi:10.1016/j.jmrt.2020.06.025

Cited by 13 publications

(11 citation statements)

References 24 publications

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“…Although this setup is straightforward, there are substantial production challenges, including low throughput, blockage of the needle spinneret, instability of Taylor cone, and so on. To overcome these limitations, spinneret-less free surface electrospinning techniques have been developed, whereby a large number fiber jets are generated from continuous surfaces, such as wire [28][29][30], cylinder [31], porous tube [32], spin dope solution reservoir [33,34], and so on. In the present study, a high throughput free surface electrospinning method conducive for large scale production was adapted to develop composite nonwoven carriers for salicylaldehyde and hexanal precursors.…”

Section: Supplementary Informationmentioning

confidence: 99%

Activated release of hexanal and salicylaldehyde from imidazolidine precursors encapsulated in electrospun ethylcellulose-poly(ethylene oxide) fibers

2021

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Hexanal and salicylaldehyde are naturally-occurring antimicrobial volatiles from edible plants known for their efficacy for post-harvest preservation of fruits and vegetables. Due to their volatility and susceptibility to oxidation, these volatiles must be encapsulated within a carrier to control their release, especially when applied in modified atmnosphere and active packaging applications. In this study, salicylaldehyde precursor (SP; 1,3-dibenzylethane-2-hydroxyphenyl imidazolidine) and hexanal precursor (HP) were synthetized through a Schiff base reaction between these aldehydes and N,N’-dibenzylethane-1,2-diamine. The structure of SP was confirmed using nuclear magnetic resonance and attenuated total reflection-Fourier transform infrared (FTIR) spectroscopies. SP and HP, separately and in combinations, were encapsulated within ethylcellulose–poly(ethylene oxide) (EC–PEO) nonwoven membranes, using a free-surface electrospinning technique. Scanning electron microscopy showed that the morphology of the fibers varied substantially with SP and HP ratio. Specific interactions between SP and HP with the polymers were not detected from the FTIR spectroscopy analysis, suggesting that the precursors were mainly physically entrapped within the EC–PEO fiber matrix. Headspace gas chromatography showed that the release of hexanal and salicylaldehyde could be activated by contacting the precursor-containing electrospun nonwoven with an acidified agarose gel containing 0.003–0.3 M of citric acid. The delivery system can be promising for controlled release of hexanal and salicylaldehyde to extend the shelf-life of fruits and vegetables.

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Section: Supplementary Informationmentioning

confidence: 99%

Activated release of hexanal and salicylaldehyde from imidazolidine precursors encapsulated in electrospun ethylcellulose-poly(ethylene oxide) fibers

2021

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“…The response surface method (RSM) can be applied to optimize and design experiments, which has the advantages of fewer experiments, higher accuracy and better predictable performance. Central composite design (CCD) as a standard RSM design can be used for modeling, analysis and optimization of electrospinning [26]. Because the solution reservoir depth was determined by the radius of a sphere that truncated the reservoir, two factors were two SSFSE parameters: the sphere radius and applied voltage, and the response was the yield of PAN nanofibers.…”

Section: Response Surface Methods and Design Of Experimentsmentioning

confidence: 99%

“…According to the reference [26], the SSFSE parameters were set as follows: the room temperature was 20℃, the relative humidity was 70%, the receiving area was 200 mm × 200 mm, the receiving distance was 180 mm, and the applied voltages were 35 kV, 40 kV and 45 kV. The spinning processes of the SSFSE solution reservoirs with different depths were investigated by a high-speed camera (VRI Phantom-VEO-L, Ametek, California, USA), and the initial voltages of them were determined respectively, as shown in Fig.3.…”

Section: Self-made Ssfse Processesmentioning

confidence: 99%

“…In our previous researches [4,[22][23][24][25][26], a series of self-made NES devices for mass production of nanofibers have been developed and applied, such as modified MBE [22][23][24], sloping FSE (SFSE) [4], oblique section FSE (OSFSE) [25], spherical section FSE (SSFSE) [26]. According to these researches it was found that SSFSE was the optimal NES device for preparing nanofibers with the highest quality and yield.…”

Section: Introductionmentioning

confidence: 99%

“…According to these researches it was found that SSFSE was the optimal NES device for preparing nanofibers with the highest quality and yield. On this basis, the SSFSE with a replaceable solution reservoir was designed to obtain high-throughput production of nanofibers, as shown in Fig.1, and the influence of the solution reservoir radius on the spinning effects of SSFSE was studied, which indicated the SSFSE device using the solution reservoir with a radius of 25mm could provide the highest quality and yield of nanofibers [26].…”

Section: Introductionmentioning

confidence: 99%

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High-throughput free surface electrospinning using solution reservoirs with different depths and its preparation mechanism study

Yin

Ahmed

2020

Preprint

Self Cite

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This paper presented a self-made spherical section free surface electrospinning (SSFSE) using solution reservoirs with different depths for obtaining high-throughput production of nanofibers, and studied its preparation mechanism. The effects of the solution reservoir depth on the SSFSE process as well as the quality and yield of polyacrylonitrile (PAN) nanofibers were investigated experimentally using high-speed camera, precise electronic balance and scanning electron microscopy, and were analyzed theoretically by response surface methodology (RSM) and numerical simulation. The values predicted by the established RSM model and the electric field simulation results obtained by Maxwell 3D were all consistent with the experimental data, which showed that the solution reservoir depth had little effects on the quality of PAN nanofibers, but had great effects on the yields of them. When the maximum depth of solution reservoir was 4.29 mm, the PAN nanofibers prepared have the best quality and the highest yields.

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Bipolymer nanofibers: Engineering nanoscale interface via bubble electrospinning

Ali,

2023

J of Applied Polymer Sci

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Modern applications in biomedicine, drug delivery, and tissue engineering demand versatile materials capable of meeting multifaceted requirements. Conventional mono‐functional materials fall short of addressing these complex demands. To tackle this challenge, this study introduces an innovative approach utilizing bubble electrospinning for the fabrication of bipolymeric side‐by‐side nanofibers. These nanofibers incorporate distinct hydrophilic and hydrophobic domains aligned parallel to their axis, achieved through the electrospinning of polyvinyl alcohol (PVA) as the hydrophilic component, alongside either poly(ε‐caprolactone) (PCL) or Nylon6 as the hydrophobic component. The optimal diameter of the bubble electrospinning reservoir was theoretically determined via simulation of electric field using Maxwell 3D software and experimentally validated. Successful electrospinning resulted in nanofibers with hydrophilic and hydrophobic domains derived from PVA/Nylon6 and PVA/PCL polymer combinations. This innovative process yielded nanofibers with diameters as fine as 101 nm in the PVA/Nylon6 bipolymeric nanofibers. Transmission electron microscopy images provide compelling insights into the distinct interfaces formed during polymer‐polymer interactions within the nanofibers, manifesting the Janus structure. Furthermore, Fourier‐transform infrared spectroscopy confirms the presence of both polymers within the nanofiber matrix. This research represents a significant advancement in the efficient production of bipolymer nanofibers, holding promise for a wide range of applications.

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High-throughput free surface electrospinning using solution reservoirs with different radii and its preparation mechanism study

Cited by 13 publications

References 24 publications

Activated release of hexanal and salicylaldehyde from imidazolidine precursors encapsulated in electrospun ethylcellulose-poly(ethylene oxide) fibers

Activated release of hexanal and salicylaldehyde from imidazolidine precursors encapsulated in electrospun ethylcellulose-poly(ethylene oxide) fibers

High-throughput free surface electrospinning using solution reservoirs with different depths and its preparation mechanism study

Bipolymer nanofibers: Engineering nanoscale interface via bubble electrospinning

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