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Reference type: Journal
Authors: Huang ZJ, Zhang ZM, Xia Q, Li CL, Yun YB
Article Title: Surface molecularly imprinted polymer microspheres based on nano-TiO2 for selective recognition of kaempferol.
Publication date: 2017
Journal: Journal of Applied Polymer Science
Volume: 134
Issue: (23)
Page numbers: ArticleNo44888.
DOI: 10.1002/app.44888

Abstract: The molecular imprinting technique is a new method for preparing molecularly imprinted polymers (MIPs) with specific molecular recognition sites for certain target molecules. In this study, a novel, facile preparation method was presented, called "seed precipitation polymerization", for the synthesis of MIPs via surface imprinting and a support matrix. In the polymerization process, kaempferol was used as the template molecule, methacrylic acid as the functional monomer, nano-TiO2 as the support, azodiisobutyronitrile as the initiator, and ethylene glycol dimethacrylate as the crosslinker in acetonitrile solvent. The synthesized T-MIP and MIP were analyzed by infrared spectroscopy and scanning electron microscopy. In addition, the obtained polymers were evaluated by adsorption isotherms and dynamic curves for their selective recognition properties for kaempferol. The results show that T-MIP shows regular spherical particles; the adsorption dynamic curves of T-MIP show that the adsorption capacity increases with time and reaches a maximum value and then finally reaches equilibrium, and the T-MIP exhibits a higher affinity for kaempferol than does the MIP. The adsorption follows pseudo-second-order kinetics, the Freundlich adsorption equation fits the experimental data well, and there is strong evidence for multiple-layer adsorption. 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44888
Template and target information: kaempferol
Author keywords: Adsorption performance, kaempferol, molecularly imprinted polymer, seed precipitation polymerization


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