作　　者： ; ; ;

机构地区： 福州大学环境与资源学院

出　　处： 《纤维素科学与技术》 2013年第3期23-27,共5页

摘　　要： 以棉纤维为原料,甲基丙烯酸缩水甘油酯(GMA)为单体,离子液体1-丁基-3-甲基咪唑氯盐(BMIMCl)为反应介质,采用原子转移自由基聚合法(ATRP)制备纤维素-g-PGMA接枝共聚物。通过FT-IR和GPC等仪器对产物结构进行了表征。动力学研究结果显示,GMA在离子液体中的ATRP聚合反应动力学呈一级反应动力学规律,并且相对分子质量随单体转化率呈线性增加,相对分子质量分布较窄,表明该聚合反应是活性可控的;合成的纤维素接枝共聚物在丙酮溶液中具有自组装行为。 Cellulose was grafted homogeneously with glycidyl methacrylate （GMA） in an ionic liquid （1-butyl-3-methylimidazolium chloride, BMIMC1） by atom transfer radical polymerization, using cuprous bromide as a catalyst and 2,2-bipyridyl as ligand. The grafted copolymer was characterized by FT-IR and GPC analyses. Kinetic of the polymerization was also investigated and the results showed that the obtained copolymers had well-controlled molecular weight and low polydispersity, indicating that the polymerization was a ＂iving/controlled＂ systertt Further TEM image showing the cellulose graft copolymer in acetone solution could aggregate and self-assembly.

关 键 词： 纤维素 原子转移自由基聚合 甲基丙烯酸缩水甘油酯

领　　域： [理学] [理学]