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Abstract: Magnetic molecularly imprinted polymers (Mag-MIPs) which contained β-cyclodextrin (β-CD) derivative as the functional monomer were successfully prepared using 2,4-dichlorophenoxyacetic acid as template molecule, methacrylic acid and bismethacryloyl-β-cyclodextrin (BMA-β-CD) as binary functional monomer, ethylene glycol dimethacrylate as polymeric matrix components, Fe3O4 magnetite as magnetic component. Magnetic molecularly imprinted polymers were characterized by transmission electron microscope, Fourier transform infrared spectrometer, thermogravimetric analyzer. Competitive rebinding experiment results revealed that the magnetic molecularly imprinted polymers beads exhibited a higher specific recognition for the template than the non-imprinted polymers. Batch mode adsorption studies were carried out to investigate the specific adsorption equilibrium. Equilibrium dates in this study were analyzed with Langmuir isotherm model and Freundlich model, respectively. The analysis results show Langmuir isotherm model is fitted to the equilibrium date better than Freundlich model.
Template and target information: 2,4-dichlorophenoxyacetic acid, 2,4-D
Author keywords: β-cyclodextrin, Molecularly imprinted polymers, Adsorption Studies