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Reference type: Journal
Authors: Liu XJ, Wu FJ, Au CT, Tao Q, Pi MY, Zhang WH
Article Title: Synthesis of molecularly imprinted polymer by suspension polymerization for selective extraction of p-hydroxybenzoic acid from water.
Publication date: 2018
Journal: Journal of Applied Polymer Science
Volume: 136
Issue: (3)
Page numbers: 46984.
DOI: 10.1002/app.46984

Abstract: Molecularly imprinted polymer (MIP) for selective extraction of p-hydroxybenzoic acid (p-HB) was synthesized by suspension polymerization using p-HB as template, 4-vinyl pyridine as functional monomer and ethylene glycol dimethacrylate as crosslinker. As characterized by scanning electron microscopy, the MIP particles are spherical, with size ranging from 1 to 8 μm. Compared with the non-imprinted polymer (NIP), the MIP shows higher binding capacity toward p-HB: maximum binding capacity for p-HB being 8.07 μmol g-1 over MIP and 3.88 μmol g-1 over NIP. The adsorption of p-HB on MIP follows the Freundlich model and displays pseudo-second-order kinetics. The results of selective and competitive binding experiments confirm that the molecularly imprinted sites have excellent recognition ability toward p-HB. The results reveal that the MIP is a promising adsorbent for selective extraction of p-HB from water samples. 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 46984
Template and target information: p-hydroxybenzoic acid, p-HB, 4-hydroxybenzoic acid


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