Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 3, Issue 8, Pages 1771-1776Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.5b00303
Keywords
Hydroxide solution; Cellulose; Maintenance-free; Dissolution; NMR spectroscopy
Categories
Funding
- Science and Technology Research Promotion Program for Agriculture, Forestry, Fisheries and Food Industry [26052A]
- Japan Science Technology Agency, JST CREST program
- Grants-in-Aid for Scientific Research [15K17867] Funding Source: KAKEN
Ask authors/readers for more resources
Here, we report maintenance-free cellulose solvents that dissolve much cellulose within a few minutes under mild conditions even in the presence of water. We have examined a series of aqueous solutions of tetraalky-phosphonium and tetraalkyl-ammonium hydroxides to clarify the effect of cation species on cellulose dissolving. Aqueous solutions of the many hydroxides examined here were found to dissolve cellulose at room temperature, and electrostatic interaction and/or steric hindrance of component ions are suggested to affect the cellulose-dissolving ability. In spite of increasing water content after dissolution of wet cellulose, the water content automatically reduced to less than 60% just by keeping the filtrated solution in the air. The solvation state of cellulose in aqueous Ilium hydroxide solutions is discussed with C-13 NMR chemical shift of cellobiose signals in these solutions. They dissolve cellulose only when the C-13 NMR signal of the carbon atom at the 12 position of cellobiose is 64.8 ppm or larger in the hydroxide aqueous solution.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available