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Reference type: Journal
Authors: Li L, Liang ZP, Zhou QS, Chen R, Lin SL
Article Title: Preparation and characterization of imidacloprid molecular imprinted polymers.
Publication date: 2013
Journal: Food and Fermentation Industries
Volume: 39
Issue: (12)
Page numbers: 79-84.
Alternative URL: http://caod.oriprobe.com/articles/41417454/Preparation_and_characterization_of_imidacloprid_molecular_imprinted_p.htm

Abstract: Molecular imprinted polymers (MIPs) for imidacloprid were prepared by suspension polymerization method, in which acrylic acid (AA) was used as a functional monomer, and ethylene glycol dimethacrylate (EGDMA) was used as a crosslinker in methanol. The effects of template molecule, regarding the functional monomer molar ratio, dosage of crosslinkers and solvents on the morphology and adsorption properties were investigated. The optimized formula was obtained by an orthogonal test L 9 (33) as follows: imidacloprid 2 mmol, EGDMA 50 mmol, methanol 150 mL, AIBN 0.05 g, AA 8 mmol. The results showed that the polymer has largest adsorption capacity (361 mg/g) and recovery ratio (94. 6%). Scatchard analysis showed that there were two kinds of sorption active sites in MIPs, and the binding capacity (Qmax) and dissociation contents (Kd) were Qmax1 = 188.29 mg/g, Kd1 = 16.42 mg/L and Qmax2 = 610.08 mg/g, Kd2 = 714.29 mg/L respectively. The molecular imprinted polymers exhibited a good selectivity and a large adsorption capacity compared to the imidacloprid materials.
Template and target information: imidacloprid
Author keywords: Imidacloprid, Molecularly imprinted polymers, suspension polymerization, Adsorption properties


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