加热方式对离子液体溶解纤维素过程的影响分析

The Impact Analysis of the Prime Process of Heating Method for Ionic Liquid Dissolving Bamboo Cellulose Pulp

本文采用1-烯丙基-3-甲基咪唑氯盐([Amim]Cl)离子液体对竹纤维素桨粕进行溶解,故需先合成[Amim]Cl离子液体。采用油浴和水浴两种加热办法在相同温度下用[Amim]Cl离子液体去溶解竹纤维素桨粕,比较竹纤维素桨粕在[Amim]Cl离子液体中的溶解速率及溶解度。用去离子水将溶解后的竹纤维素桨粕进行再生,使用红外光谱比较再生前后竹纤维素桨粕的官能团。实验结果显示,油浴加热时竹纤维素桨粕溶解速率及溶解度要高于水浴加热时溶解速率及溶解度。通过红外表征分析得到溶解前后的竹纤维素在官能团上没有发生变化,说明该过程为物理变化。

In this paper,1-ally-l-3-methyl imidazolium chloride ([Amim]Cl) ionic liquid was used to dissolve bamboo Cellulose pulp.Two kinds of heating methods,oil bath and water bath,were used to dissolve bamboo Cellulose paddle with [Amim]Cl ionic liquid at the same temperature.The dissolution rate and solubility of bamboo Cellulose paddle in [Amim]Cl ionic liquid were compared.The dissolved bamboo Cellulose pulp was regenerated by deionized water,and the functional groups of bamboo Cellulose pulp before and after regeneration were compared by infrared spectroscopy.The experimental results show that the dissolution rate and solubility of bamboo Cellulose pulp are higher than that of water bath heating when oil bath heating.Through infrared characterization analysis,the bamboo Cellulose before and after dissolution did not change in functional groups,indicating that the process was physical change.