DMAc/LiCl体系下均相接枝纤维素的制备与表征  

Preparation and Characterization of Homogeneous Grafted Cellulose in DMAc /LiCl System

作　　者：陈萍莉[1] 孙中华[2] 

机构地区：[1]武汉信息传播职业技术学院,武汉430223 [2]曲阜师范大学,日照276826

出　　处：《包装工程》2014年第5期88-91,96,共5页Packaging Engineering

摘　　要：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℃。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 DMAe/LiC1 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 ℃. Conclusion Under these conditions, the GP of homogeneous grafted cellulose reached 76%. The grafted polymer was characterized and confired by FTIR, SEM and TG- DTA.

关 键 词：均相接枝 纤维素 N N-二甲基乙酰胺/氯化锂 甲基丙烯酸甲酯 膜 

分 类 号：TQ352.4[化学工程]