分析化学2017，Vol.45Issue(4)：521-528,8.DOI:10.11895/j.issn.0253-3820.160849
表面接枝法制备磁性邻苯二甲酸二丁酯印迹聚合物及其识别性能研究
Preparation of Magnetic Imprinted Polymer by Surface Grafting and Its Recognition Performance for Dibutyl Phthalate
摘要
Abstract
The magnetic molecularly imprinted polymers (MMIPs), based on the surface of magnetic nanoparticles being modified by surface grafting, have been successfully synthesized, with dibutyl phthalate (DBP) as template molecule, ethylene glycol dimethacrylate (EGDMA) as cross-linking agent and azobisisobutyronitrile (AIBN) as initiator. Scanning electron microscopy (SEM), transmission electron microscope (TEM), and elemental analysis were employed to characterize the MMIPs. The structure and magnetic properties of the MMIPs were investigated by means of X-ray diffraction and vibrating sample magnetometer. The BET surface area shows that MMIPs is 380 m2/g and MNIPs is 324 m2/g. A series of static adsorption experiments were conducted to analyze its adsorption performance, which followed pseudo-second-order model by the kinetic analysis with correlation coefficient (R2) 0.9797, and Sips equation with correlation coefficient (R2) 0.999 by the isothermal analysis. The imprinting factors of diallyl phthalate (DAP), DBP and di-2-ethylhexyl phthalate (DEHP) were 1.53, 2.21 and 1.39 respectively, showing that MMIPs had better recognition performance for DBP. The experiment of regeneration recycles with five times showed the regeneration ability of DBP was only reduced by 12.3％.关键词
邻苯二甲酸二丁酯/分子印迹聚合物/选择性/吸附剂Key words
Dibutyl phthalate/Molecularly imprinted polymer/Selectivity/Sorbent引用本文复制引用
徐婉珍,张枭明,黄卫红,聂仪晶,杨文明..表面接枝法制备磁性邻苯二甲酸二丁酯印迹聚合物及其识别性能研究[J].分析化学,2017,45(4):521-528,8.基金项目
本文系国家自然科学基金项目(No.21677064),中国博士后自然科学基金项目(No.2015T80515),江苏省自然科学基金项目(Nos.BK20151323,BK20151337)资助 （No.21677064）
This work was supported by the National Natural Science Foundation of China (No.21677064) （No.21677064）
