Thermal stability of solutions of cellulose in methylmorpholine-N-oxide and systems based on it
β Scribed by L. K. Golova; O. E. Borodina; Yu. Ya. Belousov; I. N. Andreeva; L. P. Yablochko; S. P. Papkov
- Publisher
- Springer US
- Year
- 1988
- Tongue
- English
- Weight
- 243 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0015-0541
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## Abstract The thermal behavior of cellulose dissolved in ionic liquids was studied in comparison to NMMO solutions. The cellulose solutions were characterized by reaction calorimetry and UVβvis spectroscopy. Generation of chromophoric substances in cellulose/IL solutions is minimized by exposing
The N-oxide group of the cellulose solvent N-methylmorpholine-N-oxide showed a strong preference for the axial position compared with N-methyl as determined by NMR experiments and computational studies. In solvents with negligible solvent -solute interaction, about 95% of the NMMO molecules obtained