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08 08, 2019;9 (1): 11518.

Cellulose dissolution in diallylimidazolium methoxyacetate + N-methylpyrrolidinone mixture.

Airong Xu, Yongxin Wang, Rukuan Liu
Author Information
  1. Airong Xu: School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan, 471003, P.R. China. airongxu@haust.edu.cn.
  2. Yongxin Wang: School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan, 471003, P.R. China.
  3. Rukuan Liu: Hunan Academy of Forestry, Changsha, Hunan, 410004, P.R. China. liurukuan@gmail.com.
PMID: 31395927 DOI: 10.1038/s41598-019-48066-8

Abstract

The utilization of cellulose in industrial applicat is of great significance to sustainable development of human society and reducing dependence on dwindling fossil resources. Nevertheless, this utilization of cellulose has actually been limited due to its insolubilization. Here, novel solvents consisting of diallylimidazolium methoxy acetate ([Aim][CHOCHCOO]) and N-methylpyrrolidinone (NMP) were developed. The solubility of cellulose in [Aim][CHOCHCOO]/NMP was determined, and the influence of [Aim][CHOCHCOO]/NMP molar ratio on cellulose dissolution was systematically investigated. Meanwhile, we also presented the affecting factors of the cellulose material fabrication including preparation approach, [Aim][CHOCHCOO] and cellulose solution concentration. Attractively, the [Aim][CHOCHCOO]/NMP solvents display much powerful dissolution capacity for cellulose even at 25 °C (25.4 g 100 g). This is mainly ascribed to the combined factors: The hydrogen bond interactions of the H2, H4 and H6 in [Aim] and carboxyl O atom in [CHOCHCOO] with the hydroxyl H atom and O atom in cellulose; the dissociation of NMP towards [Aim][CHOCHCOO]; the stabilization of NMP towards the dissolved cellulose chains. In addition, the thermostability and chemical structure of the regenerated cellulose from the solvents was also estimated.

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Journal Article Research Support, Non-U.S. Gov't

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