Abstract
Needleless electrospinning and electrospraying of aerogel particles in comparatively lower electric voltage (9 kV) have been demonstrated in the paper. Aerogel particles were dispersed in polymer solution and then needlelessly electrospun/sprayed by creating high electric charge at the syringe tip using a curved wire. FTIR spectra and SEM images proved that aerogel particles were deposited onto the base textile. In case of electrospinning, a nanofibre web holding the aerogel particles covered the fabric surface, whereas in case of electrospraying, aerogel particles deposited with the microdroplets of the polymer. The electrospraying process showed great potential for fabric surface functionalization due to the high amount of particle deposition on fabric. The new approach can be applicable for transferring other particulate materials on fabric surface through needleless electrospinning and electrospraying processes.
Highlights
Electrospinning is a method where high electric force is used as a mean to pull polymer solution and to produce very fine fibres with the diameter in nanometre range
In the most basic electrospinning setup, a high voltage is applied to a metallic needle and polymer solution is extruded through the hole of the needle. e voltage is continuously increased to the point when the repulsive force between same charge molecules exceeds the surface tension and a jet of polymer solution erupts towards the grounded collector. e ejected polymer jets experience instability in their path to the collector which causes bending and stretching of the jet and results in the production of very fine fibres
The current study aims to apply aerogel particle on textile surface by using an innovative needleless electrospinning and electrospraying method
Summary
Electrospinning is a method where high electric force is used as a mean to pull polymer solution and to produce very fine fibres with the diameter in nanometre range. We used a curved wire inside the syringe and syringe tip to condense high electric charge inside the tip where the mixture of polymer and aerogel particles gets charged and extruded to the collector. Aerogel particles were mixed with polymer solution and extruded through the hole of the electrospinning needle by using high voltage.
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