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Reference type: Journal
Authors: Hu XG, Pan JL, Hu YL, Li GK
Article Title: Preparation of molecularly imprinted polymer coatings with the multiple bulk copolymerization method for solid-phase microextraction.
Publication date: 2011
Journal: Journal of Applied Polymer Science
Volume: 120
Issue: (3)
Page numbers: 1266-1277.
DOI: 10.1002/app.33129

Abstract: Abstract: The multiple bulk copolymerization method, which was developed in our previous works, was further investigated with prometryn, tetracycline, and propranolol as templates for the preparation of molecularly imprinted polymer (MIP) coatings on silicon fibers for solid-phase microextraction. The preparation conditions (e.g., the solvent, monomer, crosslinker, component proportions, polymerization time, and number of coating procedures) were investigated systemically in an effort to enhance the coating thickness, surface morphology, and reproducibility. The methodology was examined, and some common specialties were explored in the preparation of three MIP-coated fibers. Even after the coating procedure was repeated 10 times, the prometryn, tetracycline, and propranolol MIP-coated fibers were prepared reproducibly with coating-thickness relative standard deviations of 2.6, 3.0, and 5.1%, respectively; they were highly homogeneous, and a compact morphological structure was obtained. The extraction capacities of prometryn, tetracycline, and propranolol with corresponding MIP-coated fibers were approximately 10.4, 3.9, and 3.3 times as much as those with the nonimprinted polymer (NIP)-coated fibers, respectively, and the selectivity factors of prometryn, tetracycline, and propranolol MIP coatings for the template molecules and structural analogues were 2.2 - 10.4, 2.2 - 3.9, and 1.3 - 3.3, respectively, in comparison with the corresponding NIP coatings. In comparison with commercial polydimethylsiloxane/divinylbenzene coatings that were approximately 3 times thicker, the extracted amounts of prometryn, tetracycline, and propranolol were 4.2, 12.3, and 7.7 times higher with prometryn, tetracycline, and propranolol MIP coatings, respectively. 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Template and target information: prometryn, tetracycline, propranolol
Author keywords: coatings, fibers, molecular imprinting, separation techniques


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