Dissolution of highly molecular weight cellulose isolated from wheat straw in deep eutectic solvent of Choline/L-Lysine hydrochloride  

作　　者：Jiake Wang Yan Wang Zhongzheng Ma Lifeng Yan 

机构地区：[1]CAS Key Laboratory of Soft Matter Chemistry,Hefei National Laboratory for Physical Sciences at the Microscale,Department of Chemical Physics,iCHEM,University of Science and Technology of China,Hefei,230026,China

出　　处：《Green Energy & Environment》2020年第2期232-239,共8页绿色能源与环境（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China(No.51673180 and 51873201).

摘　　要：Green solvents for cellulose dissolution is a key topic for green chemistry,especially natural cellulose with high molecular weight,and there are scarce solvents reported.Deep eutectic solvent(DES)is a typical kind of green solvent that has been attracted much attention recently.Here,high molecular weight natural cellulose(DP>3000)was first isolated from wheat straw and then be directly dissolved in the choline/L-lysine(Ch/Lys)DES.The solution owns excellent stability,and the solubility reaches^5%.Rheological studies revealed that the natural cellulose can be well dispersed in the DES solution and showed gelation at high concentrations.The dissolved cellulose can be regenerated when the dilute acid aqueous solution was added into the solution.It provides an energy conversation and an environmentally friendly route to prepare a cellulose solution,which makes it possible to convert cellulose to valuable chemicals and materials in its homogeneous solution.

关 键 词：Deep eutectic solvent(DES) Choline/L-Lysine hydrochloride Wheat straw Natural cellulose SOLVENT 

分 类 号：TQ352.6[化学工程]