Potential applications of ionic liquids in wood related industries

Abstract

The use of ionic liquids (ILs) has provided a new platform for efficient utilization of wood. In this paper, applications of ILs in wood-related industries are reviewed. First, the dissolution of wood in ILs and its application are described. Then the ILs used for wood preservation and improvement of wood anti-electrostatic and fire-proof properties are illustrated. Finally, “green” wood processing with ILs is discussed. Although some basic studies of ILs, such as their economical syntheses and toxicology are eagerly needed and some engineering problems still exist, research for application of ILs in wood-related industries has made great progress in recent years.

Advancements in chemical pretreatment techniques for enhancing bamboo fiber quality in textile applications: a critical review

“…68 The careful equilibrium between efficient pretreatment and the conservation of bamboo's innate structural integrity is crucial, since too forceful chemical treatments might deteriorate its mechanical characteristics. 69 The main obstacles in bamboo usage are its inherent natural characteristics, including a high lignin concentration and strong fibermatrix bonding, which restrict its ability to be processed and limit its variety of applications. Chemical pretreatments, including as alkali treatment, bleaching, and acetylation, have been thoroughly researched and utilized to address these constraints.…”

Preparation of Thermoplastic Cellulose Esters in [mTBNH][OAC] Ionic Liquid by Transesterification Reaction

“…Cellulose has several beneficial properties, such as biodegradability, nontoxicity, and biocompatibility, as well as great mechanical strength, heat stability, and resistance to many solvents [1]. Some of these benefits are also drawbacks for processing: it is hard to dissolve cellulose and cellulose is not thermoplastic in its natural state [2].…”

“…Ionic liquids (ILs) are polar substances and, therefore, can break the hydrogen bonds between macromolecules of cellulose. In addition, ILs are not volatile, they do not enter the atmosphere, harming humans and animals, and do not cause ozone depletion or climate change [2,21]. From this point of view, ILs can be considered green solvents, unlike DMAc-LiCl and NMO, whose broad industrial utilization is limited by instability.…”

“…We use dimethyl sulfoxide (DMSO) as a co-solvent to improve the solubility, reduce the viscosity of the reaction media, and decrease the total cost of the solvents used in synthesis. DMSO was used because it is widely available, relatively sustainable regarding production methods, recyclable, and has low toxicity [2,20].…”