Abstract
In this paper, amino acid functionalized multi-walled carbon nanotubes (f-MWCNTs)/poly(amide-imide) (PAI) nanocomposites (NCs) were prepared by a solution mixing method. First, 4,4′-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) reacted with 3,5-diamino-N-(4-hydroxyphenyl)benzamide in tetra-n-butylammonium bromide as a green medium and a safe methodology (toxic and volatile organic solvents were eliminated) to produce a nanostructured PAI in high yield. MWCNTs were chemically modified with S-valine using microwave irradiation in order to obtain a homogeneous dispersion of MWCNTs in the PAI matrix. The resulting NCs were also characterized by FT-IR, powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and thermogravimetric analysis. The TEM and FE-SEM images confirmed good dispersion of f-MWCNTs in the polymer matrix. The results of TGA analysis suggest that a good thermal stability occurs especially with low filler amounts (5 wt%) of f-MWCNT.
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Acknowledgements
We appreciated the financial support from the Research Affairs Division Isfahan University of Technology (IUT), Isfahan. The partial support of Iran Nanotechnology Initiative Council (INIC), National Elite Foundation (NEF), and Center of Excellence in Sensors and Green Chemistry (IUT) is gratefully acknowledged.
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Mallakpour, S., Abdolmaleki, A. & Rostami, M. Hybrid S-valine functionalized multi-walled carbon nanotubes/poly(amid-imide) nanocomposites containing trimellitimidobenzene and 4-hydroxyphenyl benzamide moieties: preparation, processing, and thermal properties. J Mater Sci 49, 7445–7453 (2014). https://doi.org/10.1007/s10853-014-8449-z
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DOI: https://doi.org/10.1007/s10853-014-8449-z