磁性分子印迹聚合物的制备及其对全氟辛烷磺酸的分离富集

Preparation of Magnetic Molecularly Imprinted Polymer for the Separation and Enrichment of Perfluorooctane Sulfonic Acid

本文以核-壳结构Fe_(3)O_(4)作为固相载体,全氟辛烷磺酸(PFOS)作为模板分子,硅烷偶联剂作为功能单体合成了新型磁性分子印迹聚合物MMIPs。MMIPs可有效地将Fe_(3)O_(4)的超顺磁性与分子印迹聚合物的高吸附选择性结合在一起,具有较好的吸附动力学,可更好地去除PFOS。讨论了pH和温度等因素对吸附性能的影响,结果表明,该聚合物具有吸附时间短,吸附容量高,选择性和重复使用性好等优点。

This paper synthesized a new magnetic molecularly imprinted polymer MMIPS with core-shell Fe_(3)O_(4) as a solid carrier,perfluorooctane sulfonic acid(PFOS)as template molecule,and silane coupling agent as functional monomer.MMIPs can effectively combine the superparamagnetism of Fe_(3)O_(4) with the high adsorption selectivity of molecularly imprinted polymers,have good adsorption kinetics,and can better remove PFOS.The effects of pH and temperature on the adsorption properties were discussed.The results showed that the polymer had the advantages of short adsorption time,high adsorption capacity,good selectivity,and reusability.