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Open AccessArticle

Dyeing of m-Aramid Fibers in Ionic Liquids

Deutsches Textilforschungszentrum Nord-West gGmbH, Adlerstr. 1, D-47798 Krefeld, Germany
Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitaetsstr. 2, 45141 Essen, Germany
Authors to whom correspondence should be addressed.
Polymers 2020, 12(8), 1824;
Received: 29 January 2020 / Revised: 4 August 2020 / Accepted: 12 August 2020 / Published: 14 August 2020
(This article belongs to the Special Issue Smart Textile)
Aramids represent a class of high-performance fibers with outstanding properties and manifold technical applications, e.g., in flame-retardant protective clothing for firefighters and soldiers. However, the dyeing of aramid fibers is accompanied by several economic and ecological disadvantages, resulting in a high consumption of water, energy and chemicals. In this study, a new and innovative dyeing procedure for m-aramid fibers using ionic liquids (ILs) is presented. The most relevant parameters of IL-dyed fibers, such as tensile strength, elongation and fastness towards washing, rubbing and light, were determined systematically. In summary, all aramid textiles dyed in ILs show similar or even better results than the conventionally dyed samples. In conclusion, we have successfully paved the way for a new, eco-friendly and more sustainable dyeing process for aramids in the near future. View Full-Text
Keywords: textiles; m-aramid fibers; ionic liquids; dyeing textiles; m-aramid fibers; ionic liquids; dyeing
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MDPI and ACS Style

Opwis, K.; Celik, B.; Benken, R.; Knittel, D.; Gutmann, J.S. Dyeing of m-Aramid Fibers in Ionic Liquids. Polymers 2020, 12, 1824.

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