以假穴醚环为功能基的聚合物的合成与对Fe^(3+)的吸附

Synthesis and Adsorption Properties of a Novel Polymer Containing Cyclic Pseudo-Cryptand Ether as Functional Group for Fe^(3+)

以2-苯氧乙醇为起始剂,用先缩聚、后关功能环的方法,合成了以酚醛交联链和氮原子为桥头的新型聚合物假穴醚;测试了聚合物穴醚对金属离子的静态吸附性能。结果表明,聚合物对Fe3+具较好的选择吸附功能,其吸附容量为1.22 mmol/g(Fe3+的起始浓度为0.053 mmol/L,25℃);在研究范围内,吸附量随Fe3+溶液浓度的增大而增加、随吸附时间的加长而增加,吸附进行3 h后趋于吸附平衡状态。吸附聚合物具有良好的再生和重复利用性能,重复使用4次后,对Fe3+的吸附容量仍可达到1.16 mmol/g以上。

With 2-phenoxyethanol as initial material, a novel pseudo-cryptand ether polymer with crosshnking phenolic chain and nitrogen atom at the end of bridge was synthesized by a combined method of first polymerization, then cyclization and functionalization. Static adsorption properties of the polymeric cryptand ether for metallic ions were tested. The results show that the polymer has a good preferential adsorption property for Fe^3＋ and the adsorption capacity is 1.22 mmol/g （ start concentration of Fe^3＋ ：0. 053 mol/L, 25℃ ）. Within the limits, the quantity of adsorption for Fe^3＋ increases along with the rising of Fe^3＋ concentration and the increase of adsorptive time, the adsorption reaches equilibrium after three hour. The polymer has a good reprocess property and it can be fully reused. The adsorption capacities were over 1.16 mmol/g after it was used more than four times.