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以离子液体为溶剂溶解纤维素,在均相条件下4-乙烯基吡啶(4Vp)与甲基丙烯酸丁酯(BMA)为接枝单体,过硫酸铵为引发剂,N,N-亚甲基双丙烯酰胺为交联剂,通过均相自由基聚合制备了纤维素-g-P(4Vp/MBA)共聚物。利用FT-IR对其结构进行了表征。考察了单体用量、聚合温度、聚合时间、交联剂用量、引发剂用量对接枝效果的影响,以及不同接枝共聚物对酚类、金属离子的吸附效果。结果表明,双功能单体的接枝不仅可以增加纤维素接枝共聚物接枝效率,而且对2,4-DCP和金属离子均有较好的吸附效果,对2,4-DCP吸附容量为798.8mg/g,对金属离子Cu2+、Pb2+、Cd2+吸附容量分别达到41.27、31.27和22.93mg/g。
Using ionic liquid as solvent to dissolve cellulose, 4-vinylpyridine (4Vp) and butylmethacrylate (BMA) were grafted monomer under homogeneous condition, ammonium persulfate as initiator, N, N- Binary acrylamide was used as crosslinking agent and cellulose-gP (4Vp / MBA) copolymer was prepared by homogeneous radical polymerization. Its structure was characterized by FT-IR. The effects of the amount of monomer, polymerization temperature, polymerization time, the amount of crosslinking agent and initiator on the grafting effect, and the adsorption of phenols and metal ions by different graft copolymers were investigated. The results showed that the grafting of bifunctional monomer not only can increase the grafting efficiency of cellulose graft copolymer, but also have good adsorption effect on 2,4-DCP and metal ions. The adsorption capacity of 2,4-DCP is 798.8mg / g, the adsorption capacity of Cu2 +, Pb2 +, Cd2 + for metal ions reached 41.27, 31.27 and 22.93mg / g, respectively.