Abstract
This study aims at characterizing the thermal and morphological properties of multi-walled carbon nanotubes (MWCNT)s reinforced poly(ester-imide) (PEI) bionanocomposites (BNC)s containing amino acid group which were prepared through ultrasonication technique. To enhance the interfacial interaction between MWCNTs and PEI, carboxylic functionalized MWCNTs were embedded with PEI chains. By applying a step-growth polymerization method, biodegradable and chiral PEI was synthesized from a reaction of natural amino acid based diacid (4) with 4,4′-thiobis(2-tert-butyl-5-methylphenol) (5) promoted by tosyl chloride in pyridine and N,N-dimethyl formamide solution. The prepared BNCs were studied with Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The microstructure study of the BNCs containing 5, 10, and 15 wt.% MWCNT–COOH exhibited rather homogeneous dispersion of MWCNTs throughout PEI matrices on the macroscopic scale. In comparison with neat PEI, the MWCNTs reinforced BNCs revealed higher thermal stability as confirmed by TGA results.
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Acknowledgments
We wish to express our gratitude to the Research Affairs Division Isfahan University of Technology (IUT), Isfahan, for partial financial support. Further financial support from National Elite Foundation (NEF), Iran Nanotechnology Initiative Council (INIC) and Center of Excellency in Sensors and Green Chemistry Research (IUT) is gratefully acknowledged.
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Mallakpour, S., Soltanian, S. Functionalized multi-wall carbon nanotube reinforced poly(ester-imide) bionanocomposites containing L-leucine amino acid units. J Polym Res 21, 335 (2014). https://doi.org/10.1007/s10965-013-0335-x
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DOI: https://doi.org/10.1007/s10965-013-0335-x