纤维素在离子液体中有良好的溶解性能形成均相体系,文中制备了1-烯丙基-3-甲基氯代咪唑[Am im]C l离子液体,与丙烯酰胺进行接枝共聚合及阳离子化,合成不同聚合度的纤维素阳离子絮凝剂,并与L iC l/DMAc体系进行比较,探讨其絮凝性能。结果显示:纤维素在[Am im]C l中溶解性能良好、接枝共聚反应活性较好;纤维素聚合度较低时,阳离子絮凝剂絮凝效果显著。对高岭土悬浊水的浊度去除率达94%以上;对草浆废水的浊度去除率达87%以上、COD值降低50%以上。 Cellulose has a good solubility in ionic liquids to form a homogeneous system. In this paper, 1-allyl-3-methylimidazolium [Am im] C l ionic liquids were prepared and graft copolymerized with acrylamide and Cationic, different degree of polymerization of cellulose cationic flocculant synthesis, and compared with the LICl / DMAc system to explore the flocculation performance. The results showed that cellulose had good solubility in [Am im] C 1 and good graft copolymerization activity. The flocculation effect of cationic flocculant was significant when the degree of polymerization of cellulose was low. The turbidity removal rate of kaolin suspended water was more than 94%. The turbidity removal rate of straw pulp wastewater was over 87% and the COD value was reduced by more than 50%.