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Reference type: Journal
Authors: Sun FQ, Meng MJ, Yan L, He ZH, Yan YS, Liu Y, Liu SJ
Article Title: Fabrication of ordered microporous styrene-acrylonitrile copolymer blend imprinted membranes for selective adsorption of phenol from salicylic acid using breath figure method.
Publication date: 2015
Journal: Journal of Applied Polymer Science
Volume: 132
Issue: (31)
Page numbers: ArticleNo42350.
DOI: 10.1002/app.42350

Abstract: Highly selective, ordered microporous molecularly imprinted membranes (MIMs) for phenol were synthesized by breath figure (BF) method using styrene-acrylonitrile copolymer (SAN) as the membrane matrix and molecularly imprinted polymer nanoparticles (nano-MIPs) as the imprinted nanoparticles. The nano-MIPs were synthesized by oil-in-water emulsion polymerization using 4-vinyl pyridine (4-VP), methyl methacrylate (MMA) or cinnamic acid (CA) as the functional monomer, respectively. The prepared nano-MIPs were characterized by transmission electron microscope (TEM) and Raman, whereas MIMs were characterized by SEM, membrane flux, and selective adsorption experiments. Morphological analysis exhibited that the addition of nano-MIPs improved the formation of ordered and well-defined porous membrane morphology. Compared with MMA-MIM and CA-MIM, the 4-VP-MIM exhibited higher membrane flux, adsorption capacity, and stronger selective binding for phenol as well as excellent permeation selectivity for phenol. Moreover, the selective effect of 4-VP-MIM on phenol was strongly affected by the amount of 4-VP imprinted nanoparticles (nano-4-VP-MIPs). The experimental data revealed that the 4-VP-MIM containing 2.0 wt % of nano-4-VP-MIPs exhibited the highest separation selectivity for the template phenol, whose selectivity coefficients for phenol relative to salicylic acid (SA) and p-hydroxybenzoic acid (p-HB) were 5.6770 and 5.5433, respectively, which was close to the predicted selectivity coefficient value. 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42350
Template and target information: phenol
Author keywords: adsorption, membranes, molecular recognition, separation techniques


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