"Aero-Fib" - Untersuchung der Synthese, Charakterisierung und Spinnerei von hochporösen aero zellulosischen Fasern zur Anwendung in technischen Textilien

• Antragsteller: Professor Dr.-Ing. Thomas Gries; Professor Dr. Lorenz Ratke
• Fachliche Zuordnung: Polymere und biogene Werkstoffe und darauf basierende Verbundwerkstoffe
• Förderung: Förderung von 2011 bis 2016
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 179080540

• Erstellungsjahr: 2016

Zusammenfassung der Projektergebnisse

Up to now there are few examples of highly porous fibers, which have advantageous properties. Still nanoporous fibers for textile-relevant applications have not been synthesized successfully. Sol-gel analogous syntheses routes as well as production ways for cellulose aerogel fibers have been worked out. Understanding how processes work and how structures influence properties has been achieved. Methods such as textile technology, machine engineering, chemical knowledge and material science have been combined to work out cellulose aerogel multifilament fibers showing textile relevant properties including filament diameters smaller than 30 µm, filament strengths in the dimension of wool fibers (up to 15 cN/tex) and specific surfaces up to 500 m2/g. Machines and process sub-steps, such as ion exchange and solidphase-extraction procedures have been developed. This development has led to small nonwovens and bobbins of flexible aerogel fibers. Doors for possible application fields have therefore been opened.

Projektbezogene Publikationen (Auswahl)

• Monoliths and fibrous cellulose aerogels in: Aerogels Handbook, New York, Springer, 173 – 189 (2011)
  Ratke, L.
  
• Synthesis and characterization of highly porous cellulose aerogels for textiles applications, CELLMAT-Cellular Materials, 7th – 9th November 2012, Dresden, Germany. ISBN: 978-3-00-039965-7
  Ilknur Karadagli, Barbara Milow, Lorenz Ratke, Björn Schulz, Gunnar Seide and Thomas Gries
  
• The Journal of Supercritical Fluids, J.Supercritical Fluids 106 (2015) 105-114
  Ilknur Karadagli, Björn Schulz, Maria Schestakow, Barbara Milow, Thomas Gries, Lorenz Ratke
  (Siehe online unter https://doi.org/10.1016/j.supflu.2015.06.011)
• Cellulose aerogels from an aqueous zinc chloride salt hydrate melt, Carbohydrate polymers, 137 (2016) 642-649
  M. Schestakow, I. Karadagli, L. Ratke
  (Siehe online unter https://doi.org/10.1016/j.carbpol.2015.10.097)