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 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.展开更多
Deep eutectic solvents(DESs)have received widespread attention for their advantages of good electrical conductivity,stability,environmental friendliness,and easy preparation with a wide range of applications.However,i...Deep eutectic solvents(DESs)have received widespread attention for their advantages of good electrical conductivity,stability,environmental friendliness,and easy preparation with a wide range of applications.However,it was not until recent years that DESs were used as gel electrolytes as environmentally friendly alternatives to ionic liquids(ILs).In this mini review,we first introduce the DESs related eutectogels(or ion gels),then introduce the types and applications of the gels,the opportunities and challenges of them are also summarized.展开更多
基金This work is supported by the National Natural Science Foundation of China(No.51673180 and 51873201).
文摘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.
基金supported by the National Key R&D Program of China(No.2020YFA0710700)the National Natural Science Foundation of China(No.51873201 and 51673180)the Fundamental Research Funds for the Central Universities of China(No.YD2060002015).
文摘Deep eutectic solvents(DESs)have received widespread attention for their advantages of good electrical conductivity,stability,environmental friendliness,and easy preparation with a wide range of applications.However,it was not until recent years that DESs were used as gel electrolytes as environmentally friendly alternatives to ionic liquids(ILs).In this mini review,we first introduce the DESs related eutectogels(or ion gels),then introduce the types and applications of the gels,the opportunities and challenges of them are also summarized.
