纤维素的活化方法对纤维素在离子液体中溶解性能的影响

Influence of activating methods on cellulose to dissolve in ionic liquid

采用了4种方法活化纤维素,将活化后的纤维素溶解在1-甲基-3-烯丙基氯代咪唑离子液体里。利用X射线衍射仪,傅里叶红外光谱仪(FT-IR)及扫描电镜(SEM),分析了活化后纤维素的溶解度、结晶度及表面形态的变化。研究发现各种活化方法均能提高纤维素的溶解性能,其中以18%氢氧化钠活化处理纤维素的综合效果较好。

Four methods are used to activate cellulose,and the activated cellulose can dissolve in an ionic liquid,1-butyl-3-methylimidazolium(Cl).The solubility and surface morphology of activated cellulose are analyzed by XRD,FT-IR and SEM.The results show that all the activation methods can improve the solubility of cellulose and the general effect of activated cellulose,and among them 18% of NaOH is the best one.