Aqueous N,N-dimethylmorpholinium hydroxide as a novel solvent for cellulose
Artikel i vetenskaplig tidskrift, 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,

Författare

Shirin Naserifar

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Beatrice Swensson

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Diana Bernin

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparat- och reaktionsteknik

Merima Hasani

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

European Polymer Journal

0014-3057 (ISSN)

Vol. 161 110822

Funktionaliserade cellulosastrukturer från alkaliska vattensystem

Knut och Alice Wallenbergs Stiftelse, 2019-07-01 -- 2023-10-01.

Ämneskategorier

Polymerkemi

Pappers-, massa- och fiberteknik

Polymerteknologi

DOI

10.1016/j.eurpolymj.2021.110822

Mer information

Senast uppdaterat

2021-11-18