Cellulose Dissolution in Ionic Liquid: Ion Binding Revealed by Neutron Scattering

2018 ◽  
Vol 51 (19) ◽  
pp. 7649-7655 ◽  
Author(s):  
Vikram Singh Raghuwanshi ◽  
Yachin Cohen ◽  
Guillaume Garnier ◽  
Christopher J. Garvey ◽  
Robert A. Russell ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Neutron Scattering ◽  
Ion Binding ◽  
Cellulose Dissolution

scholarly journals Facile Cellulose Dissolution and Characterization in the Newly Synthesized 1,3-Diallyl-2-ethylimidazolium Acetate Ionic Liquid

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 526 ◽  
Author(s):  
Hui Zhang ◽  
Yaoguang Xu ◽  
Yuqi Li ◽  
Zexiang Lu ◽  
Shilin Cao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Cellulose Dissolution

A morpholinium ionic liquid for cellulose dissolution

2015 ◽  
Vol 130 ◽  
pp. 18-25 ◽  
Author(s):  
Dilip G. Raut ◽  
Ola Sundman ◽  
Weiqing Su ◽  
Pasi Virtanen ◽  
Yasuhito Sugano ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Cellulose Dissolution

scholarly journals Small-angle neutron scattering study of a dense microemulsion system formed with an ionic liquid

Soft Matter ◽  
2017 ◽  
Vol 13 (39) ◽  
pp. 7154-7160 ◽  
Author(s):  
T. Kang ◽  
S. Qian ◽  
G. S. Smith ◽  
C. Do ◽  
W. T. Heller
Keyword(s):  
Ionic Liquid ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Composition Series ◽  
Microemulsion System ◽  
Structure And Properties ◽  
Scattering Study ◽  
Neutron Scattering Study ◽  
Systematic Composition

The structure of the microemulsion formed with an Ionic Liquid (IL) in specific systematic composition series has been investigated by small-angle neutron scattering to understand how the IL can be used to tune the structure and properties of microemulsions.

scholarly journals Ionophore-Assisted Electrochemistry of Neutral Molecules: Oxidation of Hydrogen in an Ionic Liquid Electrolyte

2019 ◽  
Author(s):  
Johannes Wandt ◽  
Junqiao Lee ◽  
Damien Arrigan ◽  
Debbie Silvester
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Electrochemical Sensors ◽  
Liquid Electrolyte ◽  
Ion Binding ◽  
Ionic Liquid Electrolyte ◽  
Neutral Gas ◽  
Oxidation Of Hydrogen ◽  
Gas Molecules ◽  
Novel Concept

<p>The electrochemical properties of gas molecules are of great interest for both fundamental and applied research. In this study, we introduce a novel concept to systematically alter the electrochemical behavior and, in particular, the redox potential of neutral gas molecules. The concept is based on the use of an ion-binding agent, or ‘ionophore’, to bind and stabilize the ionic electrochemical reaction product. We demonstrate that the ionophore-assisted electrochemical oxidation of hydrogen in a room temperature ionic liquid electrolyte is shifted by almost 1 V towards more negative potentials in comparison to an ionophore-free electrolyte. The altered electrochemical response in the presence of the ionophore not only yields insights into the reaction mechanism but can be used also to determine the diffusion coefficient of the ionophore species. This ionophore-modulated electrochemistry of neutral gas molecules opens up new avenues for the development of highly selective electrochemical sensors.</p>

scholarly journals Insights into the levulinate-based ionic liquid class: synthesis, cellulose dissolution evaluation and ecotoxicity assessment

2019 ◽  
Vol 43 (33) ◽  
pp. 13010-13019 ◽  
Author(s):  
Andrea Mezzetta ◽  
Stefano Becherini ◽  
Carlo Pretti ◽  
Gianfranca Monni ◽  
Valentina Casu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Cellulose Dissolution

New levulinate ionic liquids (ILs) were able to dissolve cellulose in high amounts. The ecotoxicity profiles of these new ILs were also assessed.

scholarly journals Cellulose Dissolution in Mixtures of Ionic Liquids and Dimethyl Sulfoxide: A Quantitative Assessment of the Relative Importance of Temperature and Composition of the Binary Solvent

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5975
Author(s):  
Marcella T. Dignani ◽  
Thaís A. Bioni ◽  
Thiago R. L. C. Paixão ◽  
Omar A. El Seoud
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Statistical Model ◽  
Dimethyl Sulfoxide ◽  
Mass Fraction ◽  
Quantitative Assessment ◽  
Binary Solvent ◽  
Relative Importance ◽  
Cellulose Dissolution ◽  
Dissolution Efficiency

We studied the dissolution of microcrystalline cellulose (MCC) in binary mixtures of dimethyl sulfoxide (DMSO) and the ionic liquids: allylbenzyldimethylammonium acetate; 1-(2-methoxyethyl)-3-methylimidazolium acetate; 1,8-diazabicyclo [5.4.0]undec-7-ene-8-ium acetate; tetramethylguanidinium acetate. Using chemometrics, we determined the dependence of the mass fraction (in %) of dissolved cellulose (MCC-m%) on the temperature, T = 40, 60, and 80 °C, and the mole fraction of DMSO, χDMSO = 0.4, 0.6, and 0.8. We derived equations that quantified the dependence of MCC-m% on T and χDMSO. Cellulose dissolution increased as a function of increasing both variables; the contribution of χDMSO was larger than that of T in some cases. Solvent empirical polarity was qualitatively employed to rationalize the cellulose dissolution efficiency of the solvent. Using the solvatochromic probe 2,6-dichloro-4-(2,4,6-triphenylpyridinium-1-yl)phenolate (WB), we calculated the empirical polarity ET(WB) of cellobiose (a model for MCC) in ionic liquid (IL)–DMSO mixtures. The ET(WB) correlated perfectly with T (fixed χDMSO) and with χDMSO (fixed T). These results show that there is ground for using medium empirical polarity to assess cellulose dissolution efficiency. We calculated values of MCC-m% under conditions other than those employed to generate the statistical model and determined the corresponding MCC-m% experimentally. The excellent agreement between both values shows the robustness of the statistical model and the usefulness of our approach to predict cellulose dissolution, thus saving time, labor, and material.

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