Journal
POLYMER BULLETIN
Volume 75, Issue 12, Pages 5731-5744Publisher
SPRINGER
DOI: 10.1007/s00289-018-2358-2
Keywords
Gl-MWCNT; PI; TGA; XRD; TEM; FESEM
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Funding
- Research Affairs Division of Petroleum University of Technology (PUT), Ahwaz Faculty of Petroleum Engineering
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l-glutamine-grafted multi-walled carbon carboxylic acid nanotube (denoted as l-Gl-MWCNT) and polyimide-matrix l-Gl/MWCNT (l-Gl-MWCNT/PI) were prepared by in situ polymerization and solution-blending processes. The functionalization process was one-pot, fast, and simple, and resulted in a high degree of functionalization as well as dispersibility in organic solvents. The resulting materials were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, high-resolution transmission electron microscopy, and field-emission scanning electron microscopy. According to the microscopic characterizations, the MWCNTs are homogeneously dispersed in the composites. The thermal stability of the films containing Gl-MWCNTs was improved as the nanotube content increased from 5 to 15wt% due to the improved interfacial interaction between the PI matrix and surface-modified MWCNTs.
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