Dissolution performance of cellulose in [A2im][MOA]/MIM solvents

Airong Xu; Yongxin Wang; Changzhu Li; Zhihong Xiao; Rukuan Liu

doi:10.1039/C9RA03979A

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Dissolution performance of cellulose in [A₂im][MOA]/MIM solvents†

Airong Xu,

*^a Yongxin Wang,^a Changzhu Li,^bc Zhihong Xiao^bc and Rukuan Liu*^bc

Author affiliations

* Corresponding authors

^a School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, PR China
E-mail: airongxu@haust.edu.cn
Fax: +86-379-64231914
Tel: +86-379-64231914

^b Hunan Academy of Forestry, Changsha, Hunan 410004, PR China

^c Hunan Collaborative Innovation Centre for Effective Utilizing of Wood Bamboo Resources, Changsha, Hunan 410004, PR China

Abstract

Cellulose solvents ([A₂im][MOA]/MIM) were developed by combining diallylimidazolium methoxyacetate ([A₂im][MOA]) with N-methylimidazole (MIM). The cellulose solubilities in the ([A₂im][MOA]/MIM) solvents were determined at 25 °C, and the effect of the MIM/[A₂im][MOA] molar ratio on cellulose solubility was systematically investigated. Attractively, the solvents show cellulose solubility as high as 25.2 g 100 g⁻¹ even at 25 °C. It is proposed that the H2, H4 and H6 in [A₂im]⁺ and the carboxyl O atom in [MOA]⁻ primarily contribute to the dissolution of cellulose; MIM mainly acts to dissociate [A₂im][MOA] into [A₂im]⁺ and [MOA]⁻, and stabilize the dissolved cellulose chains. Moreover, the porous cellulose materials with varying morphological structures could be tailored by simply tuning the cellulose solution concentration, and the formation mechanism of the cellulose material was discussed.

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Article information

DOI: https://doi.org/10.1039/C9RA03979A
Article type: Paper
Submitted: 26 May 2019
Accepted: 01 Jul 2019
First published: 04 Jul 2019
This article is Open Access

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RSC Adv., 2019,9, 20976-20981

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Dissolution performance of cellulose in [A₂im][MOA]/MIM solvents

A. Xu, Y. Wang, C. Li, Z. Xiao and R. Liu, RSC Adv., 2019, 9, 20976 DOI: 10.1039/C9RA03979A

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