Cellulose Nanocrystals from Ionic Liquids: A Critical Review

2021 ◽  
Author(s):  
Julia L. Shamshina ◽  
Noureddine Abidi
Keyword(s):  
Ionic Liquids ◽  
Cellulose Nanocrystals ◽  
Critical Review

Driven by the promising future of cellulose nanocrystals (CNCs), extensive research in the field of CNCs’ preparation has been conducted to date. This critical review provides a perspective on recent...

Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

2021 ◽  
Vol 55 (3) ◽  
pp. 1419-1435
Author(s):  
Fen Liu ◽  
Jiang Yu ◽  
Abdul Basit Qazi ◽  
Li Zhang ◽  
Xueke Liu
Keyword(s):  
Ionic Liquids ◽  
Critical Review ◽  
Oxidative Desulfurization

Hybridization of metal–organic frameworks and task-specific ionic liquids: fundamentals and challenges

2018 ◽  
Vol 2 (2) ◽  
pp. 219-234 ◽  
Author(s):  
Qun-xing Luo ◽  
Bo-wen An ◽  
Min Ji ◽  
Jie Zhang
Keyword(s):  
Ionic Liquids ◽  
Critical Review ◽  
State Of The Art ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
And Task

This critical review presents the fundamentals, challenges, and outlooks in MTHMs according to state-of-the-art progress and first-hand experience.

scholarly journals Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids

2019 ◽  
Author(s):  
◽  
Gcinile Pretty Mdletshe
Keyword(s):  
Electron Microscopy ◽  
Ionic Liquids ◽  
Sugarcane Bagasse ◽  
Cellulose Nanocrystals ◽  
Crystallinity Index ◽  
Attenuated Total Reflection ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Pre Treatment

Lignocellulosic materials have the potential to partly replace fossil-based resources as a source of bio-fuels, bio-chemicals, bio-composites and other bio-products. In this study, ionic liquids (ILs) were used in the pre-treatment of ground sugarcane bagasse (SCB). The ILs used were 1-butyl-3-methylimidazolium hydrogen sulphate or 1-butyl-3-methylimidazolium methyl sulphate at varied times. The ILs were able to remove lignin and hemicellulose from biomass. The IL [bmim][HSO4] had the highest amount of lignin removed after 12 h than all samples. Moreover, it resulted in the greatest cellulose amount. Milled SCB was pre-treated with IL/dimethyl sulphoxide (DMSO) mixtures. The IL [bmim][HSO4] was able to produce cellulose nanocrystals (CNCs) at 90 % IL and 100 % IL. The other IL failed to produce CNCs. Freeze drying the CNC suspension showed morphologies of long fibrous structures and rods which were evident in the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. The crystallinity index of cellulose in the form of CNCs was calculated from powder X-ray diffraction (P-XRD). Thermal analysis of the CNCs was obtained from thermogravimetric analysis (TGA). Attenuated total reflection-Fourier transform infrared (ATR-FTIR) was used to confirm the absence of lignin and hemicellulose in CNCs. The size distribution of CNCs was obtained by using a dynamic light scattering (DLS) which showed that all the CNCs for the 100 % IL [bmim][HSO4] pre-treatment had a length < 500 nm. It was found that [bmim][HSO4], with no DMSO, was the most effective in terms of cellulose dissolution and the crystal sizes of CNCs. The conversion of cellulose to CNCs was successful with a 80 % and 100 % conversion for 90 % [bmim][HSO4]/DMSO and 100 % [bmim][HSO4], respectively.

Simultaneous improvement of thermal stability and redispersibility of cellulose nanocrystals by using ionic liquids

2018 ◽  
Vol 186 ◽  
pp. 252-259 ◽  
Author(s):  
Xiangyu Song ◽  
Lijuan Zhou ◽  
Beibei Ding ◽  
Xiang Cui ◽  
Yongxin Duan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ionic Liquids ◽  
Cellulose Nanocrystals

Surface functionalization of cellulose nanocrystals with polymeric ionic liquids during phase transfer

2017 ◽  
Vol 157 ◽  
pp. 1426-1433 ◽  
Author(s):  
Shuohan Huang ◽  
Xinhang Wang ◽  
Jiahao Shen ◽  
Routeng Wu ◽  
Hualei Zhao ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Surface Functionalization ◽  
Cellulose Nanocrystals ◽  
Phase Transfer ◽  
Polymeric Ionic Liquids

ChemInform Abstract: Biodegradation of Ionic Liquids - A Critical Review

ChemInform ◽  
2015 ◽  
Vol 46 (50) ◽  
pp. no-no
Author(s):  
Andrew Jordan ◽  
Nicholas Gathergood
Keyword(s):  
Ionic Liquids ◽  
Critical Review
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