Effective AC electrospinning technology

Kód výsledku v IS VaVaI

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RIV/46747885:24410/17:00004484

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effective AC electrospinning technology

Popis výsledku v původním jazyce

Nanofibrous materials are essential components for a number of applications in medicine, protective materials, sensors, cosmetics, the textile industry, hygiene, filtration and energy storage. The most widely used and studied technique in these fields is electrospinning which exhibits promising results thanks to its versatility and simplicity. Electrospinning is employed in multiple forms among which needle and needleless are the most distinctive. The first is based on the generation of a single jet from a nozzle and therefore it suffers from low productivity. The latter uses the destabilization of an electric field associated with liquid surfaces and enhances the throughput due to numerous resulting jets emitted from the surfaces of rollers, spheres, strings and spirals. However, although some progress in total producibility has been achieved, the efficiency of the method remains low and, moreover, both variants need a collector which makes it difficult to combine electrospinning easily with other technologies due to the presence of the high field strength within the entire spinning zone. The contribution shows that altering current (AC) electrospinning based on a needleless spinning electrode provides a highly productive smoke-like aerogel composed of nanofibers without any need for a collector. The work shows that AC needleless electrospinning gains its efficiency and collector-less feature thanks to the creation of a perpetually charge-changing virtual counter-electrode composed of the emitted nanofibers. Our results demonstrate the formation mechanism of the elastic nanofibrous smoke using high-speed camera records. The potential usage of AC needleless electrospinning is demonstrated here by spinning the plume of nanofibers into a yarn, production of composite yarns as well as 2D layers.

Název v anglickém jazyce

Effective AC electrospinning technology

Popis výsledku anglicky

Nanofibrous materials are essential components for a number of applications in medicine, protective materials, sensors, cosmetics, the textile industry, hygiene, filtration and energy storage. The most widely used and studied technique in these fields is electrospinning which exhibits promising results thanks to its versatility and simplicity. Electrospinning is employed in multiple forms among which needle and needleless are the most distinctive. The first is based on the generation of a single jet from a nozzle and therefore it suffers from low productivity. The latter uses the destabilization of an electric field associated with liquid surfaces and enhances the throughput due to numerous resulting jets emitted from the surfaces of rollers, spheres, strings and spirals. However, although some progress in total producibility has been achieved, the efficiency of the method remains low and, moreover, both variants need a collector which makes it difficult to combine electrospinning easily with other technologies due to the presence of the high field strength within the entire spinning zone. The contribution shows that altering current (AC) electrospinning based on a needleless spinning electrode provides a highly productive smoke-like aerogel composed of nanofibers without any need for a collector. The work shows that AC needleless electrospinning gains its efficiency and collector-less feature thanks to the creation of a perpetually charge-changing virtual counter-electrode composed of the emitted nanofibers. Our results demonstrate the formation mechanism of the elastic nanofibrous smoke using high-speed camera records. The potential usage of AC needleless electrospinning is demonstrated here by spinning the plume of nanofibers into a yarn, production of composite yarns as well as 2D layers.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů