Conductivity enhancement of poly(amide-imide) composites based on the synergistic effect of poly(o-methoxyaniline) and functionalized multiwalled carbon nanotube. Issue 6 (July 2021)

• Record Type: Journal Article
• Authors: Fang, Yawen; Wang, Yanbin; Li, Yongchao; Yu, Huang; Zhuang, Changlong; Luo, Zhonglin; Fan, Zicheng; Wang, Biaobing
• Is Part Of: Polymers and polymer composites. Volume 29:Issue 6(2021)
• Page Start: 672
• Page End: 683
• Publication Date: 2021-07
• Subjects: Poly(amide-imide) -- poly(o-methoxyaniline) -- carbon nanotube -- conductive -- synergistic effect; Polymers -- Periodicals; 668.905
• DOI: 10.1177/0967391120930970
• Languages: English
• ISSNs: 0967-3911

Abstract

A series of novel ternary conductive composites have been prepared by incorporating functionalized multiwalled carbon nanotubes (FMWCNTs) into the binary composites of poly(amide-imide) (PAI) and poly( o -methoxyaniline) (POMA) to further improve the conductivity of PAI composites. With increasing the weight ratio of FMWCNTs, the conductivity of PAI/POMA/FMWCNTs ternary composites has been significantly enhanced from 10 −3 S m −1 to 90 S m −1, much higher than that of the sum of PAI/POMA and PAI/FMWCNTs binary composites. The enhanced conductivity is mainly ascribed from a much more intensive conductive network formed in the PAI/POMA/FMWCNTs ternary composites. It is found that the N–H bending of amide group in the Fourier transform infrared spectrometry spectra is observed at 3298 cm −1 for PAI, 3296 cm −1 for PAI/POMA binary composites, and further blue shifted to 3292 cm −1 for PAI/POMA/FMWCNTs ternary composites. Moreover, the glass transition temperature has been increased from 82.5°C to 117.7°C. These results suggested that the hydrogen bonding interaction has been strengthened among PAI, POMA, and FMWCNTs, which is useful for dispersion of condcutive fillers into the polymer matrix.