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Microfluidic nozzle device for ultrafine fiber solution blow spinning with precise diameter control

Titelangaben

Hofmann, Eddie ; Krüger, Kilian ; Haynl, Christian ; Scheibel, Thomas ; Trebbin, Martin ; Förster, Stephan:
Microfluidic nozzle device for ultrafine fiber solution blow spinning with precise diameter control.
In: Lab on a Chip. Bd. 18 (2018) Heft 15 . - S. 2225-2234.
ISSN 1473-0189
DOI: https://doi.org/10.1039/c8lc00304a

Abstract

We present a microfluidic nozzle device for the controlled continuous solution blow spinning of ultrafine
fibers. The device is fabricated by soft lithography techniques and is based on the principle of a gas dynamic
virtual nozzle for precise three-dimensional gas focusing of the spinning solution. Uniform fibers
with virtually endless length can be produced in a continuous process while having accurate control over
the fiber diameter. The nozzle device is used to produce ultrafine fibers of perfluorinated copolymers and
of polycaprolactone, which are collected and drawn on a rotating cylinder. Hydrodynamics and mass balance
quantitatively predict the fiber diameter, which is only a function of flow rate and air pressure, with a
small correction accounting for viscous dissipation during jet formation, which slightly reduces the jet velocity.
Because of the simplicity of the setup, the precise control of the fiber diameter, the positional stability
of the exiting ultrafine fiber and the potential to implement arrays of parallel channels for high throughput,
this methodology offers significant benefits compared to existing solution-based fiber production
methods.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Microfluidic nozzle device; fiber solution blow Spinning; diameter control
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Biomaterialien
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Biomaterialien > Lehrstuhl Biomaterialien - Univ.-Prof. Dr. Thomas Scheibel
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder > Advanced Fields > Molekulare Biowissenschaften
Profilfelder > Emerging Fields
Profilfelder > Emerging Fields > Lebensmittel- und Gesundheitswissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 17 Aug 2018 06:41
Letzte Änderung: 17 Aug 2018 06:41
URI: https://eref.uni-bayreuth.de/id/eprint/45514