Michael Hummel

TL;DR: The ability of the mixtures to dissolve cellulose was best explained by the difference β-α (net basicity), rather than β alone, which was found to change most drastically, with an almost linear decrease upon addition of water.

TL;DR: In this paper, the authors reported the development of a regenerated cellulose fiber process of the Lyocell type, denoted Ioncell-F. The process is characterized by the use of a powerful direct cellulose solvent, 1,5-diazabicyclo[4.3]non-5-enium acetate ([DBNH][OAc]) a superbase-based ionic liquid.

TL;DR: In this article, the authors report about existing and novel dissolving pulp processes providing the basis for an advanced biorefinery, where the entire hemicellulose fraction is selectively dissolved in an ionic liquid in which the H-bond basicity and acidity are adequately adjusted by the addition of a co-solvent.

TL;DR: Understanding dissolution allowed us to determine that cation acidity contributed considerably to the ability of ionic liquids to dissolve cellulose and not just the basicity of the anion.

TL;DR: Ioncell-F, a recently developed process for the production of man-made cellulosic fibers from ionic liquid solutions by dry-jet wet spinning, is presented as an alternative to the viscose and N-methylmorpholine N-oxide (NMMO)-based Lyocell processes as discussed by the authors.