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Reference type: Journal
Authors: Zhou H, Xu YP, Tong HW, Liu YX, Han F, Yan XY, Liu SM
Article Title: Direct synthesis of surface molecularly imprinted polymers based on vinyl-SiO2 nanospheres for recognition of bisphenol A.
Publication date: 2013
Journal: Journal of Applied Polymer Science
Volume: 128
Issue: (6)
Page numbers: 3846-3852.
DOI: 10.1002/app.38598

Abstract: Molecularly imprinted polymers (MIP) with high performance in selectively recognizing bisphenol A (BPA) were prepared by using a novel and facile surface molecular-imprinting technique. Vinyl-functionalized, monodispersed silica spheres were synthesized by a one-step emulsion reaction in aqueous solution. Then, BPA surface molecularly imprinted polymers (SMIP) were prepared by polymerization with 4-vinylpyridine as the functional monomer and ethylene glycol dimethacrylate as the crosslinker. Maximal sorption capacity (Qmax) of the resulting SMIP was up to 600 μmol g-1, while that of nonimprinted polymers was only 314.68 μmol g-1. Kinetic binding study showed that sorption capacity reached 70% of Qmax in 20 min and sorption equilibrium at 80 min. SMIP had excellent accessibility and affinity toward BPA, for the selectivity coefficients of SMIP for BPA in respect to phenol, p-tert-butylphenol, and o-phenylphenol were 3.39, 3.35, and 3.02, respectively. The reusage process verified the SMIP owning admirably stable adsorption capacity toward BPA for eight times. 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Template and target information: bisphenol A, BPA
Author keywords: adsorption, molecular recognition, nanostructured polymers

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