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Tailoring of Sorbents for the Selective Recognition of Tyramine based on Molecular Imprinting Approach on Multiwalled Carbon Nanotubes

Author Affiliations

  • 1School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, INDIA

Res. J. Recent Sci., Volume 3, Issue (ISC-2013), Pages 163-169, (2014)

Abstract

Core-shell nano structured molecularly imprinted polymers (MIPs) for the selective separation of tyramine have been synthesized by free radical polymerization technique using vinyl functionalized multiwalled carbon nanotubes as support material and tyramine as template molecule. Functional monomer and crosslinker used for the polymerization process are methacrylic acid and ethylene glycol dimethacrylate respectively. Core–shell molecularly imprinted polymer overcomes the problems associated with the template transfer and increases the binding capacity. Porogen used is a mixture solution of acetonitrile and toluene. Morphology of the synthesized MWCNT- MIP composite was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction technique (XRD) and scanning electron microscopy (SEM) which confirmed homogeneous formation of MIP on the surface of multiwalled carbon nanotubes. Investigation of adsorption and kinetic characteristics revealed that the MWCNT-MIP composites contain homogeneous binding sites and have high binding capacity. Selectivity of the synthesized polymer was evaluated using dopamine as the structurally related compound which demonstrated that imprinted polymer has high selectivity towards tyramine.

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