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Reference type: Journal
Authors: Hemmati K, Sahraei R, Ghaemy M
Article Title: Synthesis and characterization of a novel magnetic molecularly imprinted polymer with incorporated graphene oxide for drug delivery.
Publication date: 2016
Journal: Polymer
Volume: 101
Page numbers: 257-268.
DOI: 10.1016/j.polymer.2016.08.074
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0032386116307406

Abstract: A novel nanocomposite of magnetic molecularly imprinted polymer (MMIP)/graphene oxide (GO), MMIP@GO, was prepared from mixture of acrylamido-2-methyl-1-propanesulfonic acid (AMPS) as functional monomer and ethylene glycol diacrylate (EGDA) as cross-linker in the presence of acrylate-functionalized Fe3O4 nanoparticles, GO, and Rivastigmine (RIV) as template. MMIP@GO was fully characterized by FT-IR, TGA, SEM, VSM, SEM-EDS, and XRD techniques. The swelling behavior of MMIP@GO, its recognition, and selectivity for RIV and a structural analog were tested and compared with the magnetic non imprinted polymer (MNIP). The adsorption mechanism of RIV by MMIP@GO followed the Langmuir model with the maximum capacity of 71.41 mg g-1, the kinetic data were well fitted to pseudo-first-order model, and the selectivity factor (epsilon) was 1.98 comparing to the MNIP@GO. In vitro release of RIV showed dependence on the network structure of hydrogels and the pH values (2.2-9.0). The maximum release was 74% at pH 9 after 7 days
Template and target information: rivastigmine, RIV
Author keywords: Drug release, Magnetic molecularly imprinted polymer (MMIP), pH-sensitivity, Nanocomposite

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