期刊
CELLULOSE
卷 26, 期 4, 页码 2243-2253出版社
SPRINGER
DOI: 10.1007/s10570-018-2218-0
关键词
SANS; Cellulose; DMSO; Ionic liquids; Rheology
资金
- National Natural Science Foundation of China [U1432109]
- China Scholarship Council [201606885004]
- U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research [DE-AC02-05CH11231]
- National Science Foundation [DMR-1508249]
- National Institute of Standards and Technology, U.S. Department of Commerce
Dimethyl sulfoxide (DMSO) has been successfully used as a co-solvent in cellulose and biomass processing by ionic liquids (ILs). However, the interactions between cellulose, DMSO and ILs are still not fully understood and conflicting results exist in literature. In this work, solution structures of mixture solvents of DMSO-d6 and 1-ethyl-3-methyl-imidazolium acetate ([C2C1Im][OAc]) were studied by small angle neutron scattering (SANS) where the concentration of [C2C1Im][OAc] in DMSO-d6 varied from 80 to 1wt%. In addition, the solution structure of cellulose in 10wt% ([C2C1Im][OAc])+90wt% DMSO mixture solvent were evaluated by rheology and SANS. The results were discussed considering the rigidity of cellulose chains and compared them with the marginal solution behavior of semi-flexible polymers. [GRAPHICS] .
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