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Reference type: Journal
Authors: Faizal CK, Hoshina Y, Kobayashi T
Article Title: Scaffold membranes for selective adsorption of α-tocopherol by phase inversion covalently imprinting technique.
Publication date: 2008
Journal: Journal of Membrane Science
Volume: 322
Issue: (2)
Page numbers: 503-511.
DOI: 10.1016/j.memsci.2008.05.046
Alternative URL: http://www.sciencedirect.com/science/article/B6TGK-4SMNXT4-5/2/d46e67bb630847a7fe4d51e3f35f5c1f

Abstract: A molecular-imprinted membranes targeted to α-tocopherol (α-Toc) were prepared by phase inversion of polymer containing covalently bound template group to the polymer through ester group. For preparation of such polymer, a template-containing monomer, α-tocopherol methacrylate (α-TMA) was synthesized and copolymerized with acrylonitrile (AN). Phase inversion of the AN copolymer was carried out from the DMSO solution in water non-solvent. After membrane formed, removal of the template was performed in treatment with HCl acid solution. It was observed that the amounts of α-Toc bound to imprinted and non-imprinted membranes in ethanol/water (1:1%, v/v) were 20.8рдр0.4 and 2.2рдр0.1рμmol/g, respectively. Scatchard analysis indicated that the imprinted membranes exhibited high affinity and good selective binding of α-Toc relative to its analogs, δ -Toc, and 4-chromanol (4-Chr). Evidences showed that separation was achieved with separation factor of 15.5 for α-Toc/4-Chr in ethanol/water 1:1% (v/v) solution by simple filtration procedure with high flux permeation
Template and target information: α-tocopherol, α-Toc, vitamin E
Author keywords: molecular imprinted membrane, phase inversion, permeation, adsorption, α-Tocopherol


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