Needleless Electrospinning and Electrospraying of Mixture of Polymer and Aerogel Particles on Textile

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. e electrospraying process showed great potential for fabric surface functionalization due to the high amount of particle deposition on fabric. e new approach can be applicable for transferring other particulate materials on fabric surface through needleless electrospinning and electrospraying processes.

Multilayer Nonwoven Inserts with Aerogel/PCMs for the Improvement of Thermophysiological Comfort in Protective Clothing against the Cold

“…This proves that aerogel is more effective in inhibiting heat loss than air itself. Another, more and more frequently used method of producing aerogel nonwovens is the electrospinning method [ 21 , 22 , 23 ]. Venkataraman et al [ 23 ] conducted the electrospinning process using a spinning solution obtained by dissolving polyvinylidene fluoride (PVDF) or polyurethane (PU) in dimethylformamide and adding silica aerogel in the form of granules (0.1–0.7 mm).…”

Electrospinning of Composite Materials

“…This limitation can be overcome in various ways, e.g. by rotating a drum, disk or gear in a polymer melt or solution (68,102,104). The addition of air bobbles into the electrospinning liquid can also create this effect (105).…”

“…The addition of polymer fibres to aerogel materials has been performed in order to enhance mechanical properties of the brittle aerogel (147,148). This process has been improved to a level where the aerogel can be made elastic by applying electrospun fibres in a controlled 3D pattern (149), and the same goes for processes where existing textiles are coated with aerogel/polymer particles or fibres through electrospraying or -spinning (104).…”