Aqueous N,N-dimethylmorpholinium hydroxide as a novel solvent for cellulose
Journal article, 2021

N,N-dimethylmorpholinium hydroxide was synthesized and its ability to dissolve microcrystalline cellulose and pulp was assessed for the first time. Microscopy and UV–Vis measurements showed that dissolution occurred over a range of 1–2 M concentration of the solvent and a maximum solubility of 7 wt% microcrystalline cellulose could be achieved. The stability of cellulose solutions was evaluated by size exclusion chromatography, which did not detect degradation to any noticeable extent. This observation was further confirmed by 13C NMR measurements. Finally, DLS studies confirmed that most of the cellulose was molecularly dissolved, with intrinsic viscosity values indicating cellulose chains expansion in this solvent.

SEC,

microscopy,

cellulose dissolution,

NMR

DLS,

quaternary ammonium hydroxide,

Author

Shirin Naserifar

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Forest Products and Chemical Engineering

Beatrice Swensson

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Forest Products and Chemical Engineering

Diana Bernin

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Process and Reaction Engineering

Merima Hasani

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Forest Products and Chemical Engineering

European Polymer Journal

0014-3057 (ISSN)

Vol. 161 110822

Functionalized cellulose structures from aqueous alkaline systems

Knut and Alice Wallenberg Foundation, 2019-07-01 -- 2023-10-01.

Subject Categories

Polymer Chemistry

Paper, Pulp and Fiber Technology

Polymer Technologies

DOI

10.1016/j.eurpolymj.2021.110822

More information

Latest update

11/18/2021