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Direct synthesis of surface molecularly imprinted polymers based on vinyl–SiO 2 nanospheres for recognition of bisphenol A
Author(s) -
Zhou Hong,
Xu Yeping,
Tong Hongwu,
Liu Yuxin,
Han Fang,
Yan Xiangyang,
Liu Shaomin
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38598
Subject(s) - molecularly imprinted polymer , sorption , bisphenol a , ethylene glycol dimethacrylate , adsorption , polymer , polymer chemistry , polymerization , copolymer , aqueous solution , selectivity , emulsion polymerization , nuclear chemistry , ethylene glycol , molecular imprinting , chemistry , materials science , chemical engineering , organic chemistry , catalysis , engineering , epoxy , methacrylic acid
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 ( Q max ) 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 Q max 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