目的 研究均相条件下纤维素接枝甲基丙烯酸甲酯的较佳制备条件。 方法 用 DMAc / LiCl 体系作为纤维素溶剂,过硫酸铵作为引发剂,将纤维素与甲基丙烯酸甲酯进行均相接枝聚合。 结果 最终确定了纤维素均相接枝甲基丙烯酸甲酯的较佳条件, 反应时间为 2 h, 单体与纤维素的质量比为1 : 1 ,引发剂与纤维素质量比为 6 : 50 ,反应温度为 80 益 。 结论 在此接枝条件下,纤维素均相接枝甲基丙烯酸甲酯的接枝率为 76% ,通过 FTIR,SEM 和 TG-DTA 表征,确认了均相接枝产物的存在。

Objective To study the efficient reaction conditions of the homogeneous grafting of methyl methacrylate( MMA) onto cellulose under homogenous conditions. Methods DMAc / LiCl was used as the solvent for the dissolution of cellulose and the media for the homogeneous graft polymerization of MMA onto cellulose, using ammonium persulfate as an initiator. Results The results showed that the efficient reaction conditions were as follows: reaction time, 2 h; mass ratio of MMA / cellulose, 1 : 1; mass ratio of initiator / cellulose, 6 : 50; and reaction temperature, 80 益 . Conclusion Under these conditions, the GP of homogeneous grafted cellulose reached 76% . The grafted polymer was characterized and confired by FTIR, SEM and TGDTA.