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Needleless electrospinning of PA6 fibers : the effect of solution concentration and electrospinning voltage on fiber diameter
ID Aulova, Alexandra (Author), ID Bek, Marko (Author), ID Kossovich, Leonid (Author), ID Emri, Igor (Author)

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Abstract
Needleless electrospinning is the process of forming thin material fibers from the open surface of its solution or melt in a strong electrostatic field. Electrospun non-woven materials are used in various applications that require specific fiber diameters and pore size distributions. Fiber diameter depends on the properties of the polymer solution and manufacturing conditions. A needleless electrospinning process using the Nanospider setup was investigated using the commonly used polyamide 6 (PA6) solution in a mixture of acetic and formic acids. Polymer solutions with different polymer concentrations were characterized by viscosity, surface tension and electrical conductivity. An increase in polymer content in the solution resulted in the exponential increase of the solution viscosity, polynomial increase of electrical conductivity and had almost no effect on surface tension. The effect of the polymer concentration in the solution, as well as electrospinning voltage on fiber diameter and diameter distribution, was investigated using scanning electron microscopy images. The average fiber diameter linearly increases with the increased polymer concentration and also demonstrates an increase with increased electrospinning voltage, although less pronounced. Therefore, a change in the PA6 solution concentration should be used for the robust adjustment of fiber diameter, while changes in electrospinning voltage are more appropriate for fine tuning the fiber diameter during the process of needleless electrospinning.

Language:English
Keywords:needleless electrospinning, nanospider, fiber diameter, solution concentration, voltage
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Place of publishing:Ljubljana
Year:2020
Number of pages:Str. 421-430
Numbering:Vol. 66, no. 6
PID:20.500.12556/RUL-118126 This link opens in a new window
UDC:621.3.027+620.3(045)
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2020.6713 This link opens in a new window
COBISS.SI-ID:25874179 This link opens in a new window
Publication date in RUL:21.08.2020
Views:1602
Downloads:342
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:Slovenian
Title:Brezigelno elektropredenje vlaken PA6: vpliv koncentracije raztopine in električne napetosti na premer vlaken
Keywords:brezigelno elektropredenje, nanospider, PA6, premer vlaken, koncentracija raztopine, električna napetost

Projects

Funder:ARRS - Slovenian Research Agency
Project number:L2-7550
Name:Nano strukturirani vlaknasti materiali za ciljno depozicijo zdravilnih učinkovin, izdelani z electrospinningom

Funder:ARRS - Slovenian Research Agency
Project number:P2-0264
Name:Trajnostni Polimerni materiali in Tehnologije

Funder:Other - Other funder or multiple funders
Project number:Fresenius Kabi Deutschland GmbH

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