An investigation on the effects of functionalized multi-walled carbon nanotube on mechanical and thermal properties of dopamine-bearing poly(amide-imide) composite films
Journal of Thermoplastic Composite Materials, 2015, 28(12): 1644-1661.
Composites of acid-functionalized multi-walled carbon nanotubes (MWCNTs) that reinforced poly(amide-imide) (PAI) were developed. The obtained composites containing 5, 10, and 15 wt% MWCNT-COOH exhibited a relatively good dispersion on the macroscopic scale. MWCNT/PAI composite films have been prepared by casting a solution of precursor polymer containing MWCNTs into a thin film, and its tensile properties were examined. The mechanical and thermal properties of the composites were investigated. The incorporation of MWCNTs-COOH improved the mechanical properties of the composites compared with that of neat PAI. An improvement in thermal properties of the MWCNT/PAI composites was also observed. Fourier transform infrared spectroscopy, powder x-ray diffraction, scanning and transmission electron microscopies were also used to evaluate the MWCNT/PAI composite system.
Composites; multi-walled carbon nanotube; electron microscopy; thermogravimetric analysis; mechanical properties