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Preparation and characterization of metal‐complex imprinted PVDF hollow fiber membranes
Author(s) -
Wang XueJun,
Xu ZhenLiang,
Bing NaiCi,
Yang ZuoGuo
Publication year - 2008
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.26805
Subject(s) - membrane , permeation , polyvinylidene fluoride , ethylene glycol dimethacrylate , polymer chemistry , materials science , fourier transform infrared spectroscopy , chemical engineering , attenuated total reflection , ultrafiltration (renal) , metal ions in aqueous solution , monomer , polymer , metal , chemistry , chromatography , methacrylic acid , composite material , biochemistry , engineering , metallurgy
Using nickel‐2,2′‐dipyridyl complex as a template, N ‐vinyl‐2‐pyrrolidone as the metal coordination functional monomer, and ethylene glycol dimethacrylate as the crosslinker, polyvinylidene fluoride (PVDF) hollow fiber ultrafiltration membrane as the supported membrane, metal complex imprinted polymeric membranes were prepared. The association constant of template‐monomer interaction in the prepolymerization solution was estimated to be 4.38 × 10 4 (L/mol) 2 by spectrophotometric titration analysis. The attenuated total reflection Fourier transform infrared spectroscopy and scanning electron micrograph characterization indicated that the surface of the support PVDF membrane was completely coated by the imprinted polymer layer after modification. The imprinted membranes exhibited the selective permeability for the template in certain nickel acetate solution. The molecularly imprinted membranes gave higher permeation separation factors at about pH 6, whereas increasing pressure would lower the separation ability. The effects of ion concentration, cations and counterions, ligand selectivity, pH, and trans‐membrane pressure were investigated and the permeation performances of the imprinted membranes could be regarded as facilitated transport mechanism. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008