Abstract
Functionalization of multi-walled carbon nanotubes (MWCNTs) by glucose was performed through esterification reaction. The reaction was carried out in water, in the presence of N,N′-carbonyldiimidazole as a catalyst. Glucose-functionalized MWCNTs (MWCNTs-Gl) were characterized by a set of methods including Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning, and transmission electron microscopy. Thermogravimetric analysis (TGA) results also demonstrated the presence of organic portions of the functionalized MWCNTs. MWCNT-Gl/poly(amide-imide) (PAI) composite films with different MWCNTs-Gl content (5, 10, and 15 wt%) were prepared by ultrasonication-assisted solution blending method. Microscopic observations showed that the dispersion of the MWCNTs-Gl was improved by the organic groups on the MWCNT surface and functional groups on the PAI. TGA results showed that the hybrid films exhibited a good thermal stability. According to mechanical tensile tests, the tensile strength and the Young’s modulus of the MWCNT-Gl/PAI composites were increased with increasing MWCNTs-Gl content.
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This work is performed under the support of the Research Affairs Division of Isfahan University of Technology (IUT), National Elite Foundation (NEF), and Center of Excellency in Sensors and Green Chemistry Research (IUT).
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Mallakpour, S., Zadehnazari, A. Rapid and green functionalization of multi-walled carbon nanotubes by glucose: structural investigation and the preparation of dopamine-based poly(amide-imide) composites. Polym. Bull. 71, 2523–2542 (2014). https://doi.org/10.1007/s00289-014-1205-3
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DOI: https://doi.org/10.1007/s00289-014-1205-3