Abstract
An improved bubble-electrospinning, consisting of a cone shaped air nozzle, a copper solution reservoir connected directly to the power generator, and a high speed rotating copper wire drum as a collector, was presented successfully to obtain high throughput preparation of aligned nanofibers. The influences of drum rotation speed on morphology and properties of obtained nanofibers were explored and researched. The results showed that the alignment degree, diameter distribution, and properties of nanofibers were improved with the increase of the drum rotation speed.
Highlights
IntroductionElectrospinning provides a simple and convenient method for generating nanofibers.Many outstanding characteristics of nanofibers, such as high ratio of surface area and superior thermal and mechanical properties, lead to their wide application in the fields of filtration, tissue engineering, drug delivery, health protection, and so on [1,2,3,4,5,6]
Electrospinning provides a simple and convenient method for generating nanofibers.Many outstanding characteristics of nanofibers, such as high ratio of surface area and superior thermal and mechanical properties, lead to their wide application in the fields of filtration, tissue engineering, drug delivery, health protection, and so on [1,2,3,4,5,6]
The modified free surface electrospinning (MFSE) setup consists of a copper solution reservoir which is directly connected to the power generator, and a cone shaped air nozzle combined with the solution reservoir to generate bubbles
Summary
Electrospinning provides a simple and convenient method for generating nanofibers.Many outstanding characteristics of nanofibers, such as high ratio of surface area and superior thermal and mechanical properties, lead to their wide application in the fields of filtration, tissue engineering, drug delivery, health protection, and so on [1,2,3,4,5,6]. Bubble-electrospinning (BE) is one of the most influential methods of needleless electrospinning, and it provides a high-throughput method to produce nanofibers [11]. The BE setup consists of a slim metal electrode that is connected to the power generator and introduced inside a polymer solution reservoir, along with a thin gas tube which goes through the reservoir from its bottom to produce bubbles. The metal electrode leads to lower applied voltage which results in relatively low production of nanofibers. A modified free surface electrospinning (MFSE), based on BE, is presented to enhance the production of quality nanofibers in our previous work [10]. High throughput fabrication of quality nanofibers can be obtained by MFSE under a much higher applied voltage
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