Citation: XU Wan-Zhen, ZHANG Xiao-Ming, HUANG Wei-Hong, NIE Yi-Jing, YANG Wen-Ming. Preparation of Magnetic Imprinted Polymer by Surface Grafting and Its Recognition Performance for Dibutyl Phthalate[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(4): 521-528. doi: 10.11895/j.issn.0253-3820.160849 shu

Preparation of Magnetic Imprinted Polymer by Surface Grafting and Its Recognition Performance for Dibutyl Phthalate

1.
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;
2.
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China

Received Date: 21 November 2016
Revised Date: 25 January 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21677064)

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%.
- Dibutyl phthalate,
- Molecularly imprinted polymer,
- Selectivity,
- Sorbent
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1.
沈阳化工大学材料科学与工程学院沈阳 110142