Ioncell-F is a recently developed process to produce man-made cellulosic fibers from ionic liquid solutions by dry-jet wet spinning. Ioncell-F is an environmentally friendly process and considered as an alternative to the viscose and N-methylmorpholine N-oxide (NMMO)-based Lyocell processes. The ionic liquid ‘1,5-diazabicyclo [4.3.0] non-5-ene acetate’ is used as excellent cellulose solvent allowing for a rapid dissolution at moderate temperatures and subsequent shaping into continuous filaments. Highly orientated cellulose fibers with high tenacity are obtained by coagulation in cold-water bath. These staple fibers are further converted to yarn and applied in knitting and weaving process. Nowadays, synthetic fibers such as polyesters are widely used for technical application as, for example, sportswear, work wear. However, those synthetic fibers are the major sources of microplastics that are increasingly burdening the environment. To compete with the synthetic fibers, cellulose fibers need to be functionalized and modified in order to obtain good mechanical properties. Although recently developed strategies of cellulose fiber production and their modification are gaining much interests, those approaches have some limitations. As for example, commercially available high tenacity cellulose fibers compromise the good elongation property and vice versa. In this study, using Ioncell-F technology, regenerated cellulose fibers with high tenacity and elongation were produced via different spinneret geometry and selective pulp. Cellulose fibers with such properties yield better tensile strength and toughness. The special Ioncell fibers can be used in sustainable textiles with a long life and in textiles or technical applications where high toughness is required such as in workwear. Considering the higher strength of the fiber, we hypothesize that this fiber might be used as microfiber, which might result lighter yet strong & durable fabric.

Functionalization of man-made cellulose fibers: Cellulose fibers with high toughness to replace polyester

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.