Needleless electrospinning system with wire spinneret: an alternative way to control morphology, size, and productivity of nanofibers

Prahasti, Gian; Zulfi, Akmal; Munir, Muhammad Miftahul

doi:10.1088/2632-959x/ab976a

Cited by 9 publications

(2 citation statements)

References 36 publications

(70 reference statements)

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“…Both electrical conductance and pH value are only minimally affected by the concentrations of gelatin/PVA. Thus, the statistical inference from the data indicates that the formation of nanofibers by electrospinning is largely determined by the viscosity of the polymeric solution and surface tension, which suits the mechanisms of electrospinning [58][59][60][61]. It is particularly instructive for the case of pure PVA, whose relatively lower surface eases the stretching by the electrical field in electrospinning, but higher viscosity prevents overstretching beyond the Plateau-Rayleigh instability to become droplets.…”

Section: Summary Of Process Parameters For Electrospinning Nanofibersmentioning

confidence: 98%

Fabrication of Gelatin Nanofibers by Electrospinning—Mixture of Gelatin and Polyvinyl Alcohol

Chang

et al. 2022

Polymers

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Gelatin, one of the most abundant, naturally derived biomacromolecules from collagen, is widely applicable in food additives, cosmetic ingredients, drug formulation, and wound dressing based on their non-toxicity and biodegradability. In parallel, polyvinyl alcohol (PVA), a synthetic polymer, has been commonly applied as a thickening agent for coating processes in aqueous systems and a major component in healthcare products for cartilage replacements, eye lubrication, and contact lenses. In this study, a new type of mixed hydrogel nanofiber was fabricated from gelatin and polyvinyl alcohol by electrospinning under a feasible range of polymer compositions. To determine the optimal composition of gelatin and polyvinyl alcohol in nanofiber fabrication, several key physicochemical properties of mixed polymer solutions such as viscosity, surface tension, pH, and electrical conductance were thoroughly characterized by a viscometer, surface tensiometer, water analyzer, and carbon electron probe. Moreover, the molecular structures of polymeric chains within mixed hydrogel nanofibers were investigated with Fourier-transform infrared spectroscopy. The morphologies and surface elemental compositions of the mixed hydrogel nanofibers were examined by the scanning electron microscope and energy-dispersive X-ray spectroscopy, respectively. The measurement of water contact angles was performed for measuring the hydrophilicity of nanofiber surfaces. Most importantly, the potential cytotoxicity of the electrospun nanofibers was evaluated by the in vitro culture of 3T3 fibroblasts. Through our extensive study, it was found that a PVA-rich solution (a volumetric ratio of gelatin/polyvinyl alcohol <1) would be superior for the efficient production of mixed hydrogel nanofibers by electrospinning techniques. This result is due to the appropriate balance between the higher viscosity (~420–~4300 10−2 poise) and slightly lower surface tension (~35.12–~32.68 mN/m2) of the mixed polymer solution. The regression on the viscosity data also found a good fit by the Lederer–Rougier’s model for a binary mixture. For the hydrophilicity of nanofibers, the numerical analysis estimates that the value of interfacial energy for the water contact on nanofibers is around ~−0.028 to ~−0.059 J/m2.

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Section: Summary Of Process Parameters For Electrospinning Nanofibersmentioning

confidence: 98%

Fabrication of Gelatin Nanofibers by Electrospinning—Mixture of Gelatin and Polyvinyl Alcohol

Chang

et al. 2022

Polymers

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“…In situ (handheld) [91] Ethanol Polyvinylpyrrolidone (PVP) Needleless (wire) [92] Ethanol/diacetone alcohol Polydimethylsiloxane (PDMS) and polyamide pellets Mono-axial [93] Ethanol/water Chitin propionate and PEO Mono-axial (blend) [94] Ethyl acetate/acetic acid Ethylcellulose polyglycerol polyricinoleate (surfactant) + polyethylene glycol (PEG)…”

Section: -Methyltetrahydrofuran (2methf)/formic Acid Poly(3-hydroxybu...mentioning

confidence: 99%

The History of Electrospinning: Past, Present, and Future Developments

Keirouz

Wang

Reddy

et al. 2023

Adv Materials Technologies

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Electrospinning has rapidly progressed over the past few decades as an easy and versatile way to fabricate fibers with diameters ranging from micrometers to tens of nanometers that present unique and intricate morphologies. This has led to the conception of new technologies and diverse methods that exploit the basic electrohydrodynamic phenomena of the electrospinning process, which has in turn led to the invention of novel apparatuses that have reshaped the field. Research on revamping conventional electrospinning has principally focused on achieving three key objectives: upscaling the process while retaining consistent morphological traits, developing 3D nanofibrous macrostructures, and formulating novel fiber configurations. This review introduces an extensive group of diverse electrospinning techniques and presents a comperative study based on the apparatus type and output. Then, each process's advantages and limitations are critically assessed to identify the bona fide practicability and relevance of each technological breakthrough. Finally, the outlook on future developments of advanced electrospinning technologies is outlined, with an emphasis on upscaling, translational research, sustainable manufacturing and prospective solutions to current shortcomings.

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Methods and Engineering of Electrospinning

Blachowicz,

Ehrmann

2023

Nanostructure Science and Technology

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Needleless electrospinning system with wire spinneret: an alternative way to control morphology, size, and productivity of nanofibers

Cited by 9 publications

References 36 publications

Fabrication of Gelatin Nanofibers by Electrospinning—Mixture of Gelatin and Polyvinyl Alcohol

Fabrication of Gelatin Nanofibers by Electrospinning—Mixture of Gelatin and Polyvinyl Alcohol

The History of Electrospinning: Past, Present, and Future Developments

Methods and Engineering of Electrospinning

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