Needleless electrospinning of PA6 fibers : the effect of solution concentration and electrospinning voltage on fiber diameter

Aulova, Alexandra (avtor), Bek, Marko (avtor), Kossovich, Leonid (avtor), Emri, Igor (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: needleless electrospinning, nanospider, fiber diameter, solution concentration, voltage
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Kraj izida: Ljubljana
• Leto izida: 2020
• Št. strani: Str. 421-430
• Številčenje: Vol. 66, no. 6
• PID: 20.500.12556/RUL-118126
• UDK: 621.3.027+620.3(045)
• ISSN pri članku: 0039-2480
• DOI: 10.5545/sv-jme.2020.6713
• COBISS.SI-ID: 25874179
• Datum objave v RUL: 21.08.2020

Gradivo je del revije

• Naslov: Strojniški vestnik
• Skrajšan naslov: Stroj. vestn.
• Založnik: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Brezigelno elektropredenje vlaken PA6: vpliv koncentracije raztopine in električne napetosti na premer vlaken
• Ključne besede: brezigelno elektropredenje, nanospider, PA6, premer vlaken, koncentracija raztopine, električna napetost