Facile preparation of polyimide/graphene nanocomposites via an in situ polymerization approach

Content Provider	Semantic Scholar
Author	Qin, Songlv Chen, Cheng Cui, Mingjun Zhang, Afang Zhao, Haichao Wang, Liping
Copyright Year	2017
Abstract	In this study, to achieve a compatible and good dispersion of graphene in polyimide matrix, we synthesized an aromatic diamine, aniline trimer, as a polymerizable graphene dispersant. Polyimide/graphene nanocomposites with 0.25–2% mass fraction of graphene were prepared by in situ condensation of pyromellitic dianhydride, 4,4′-oxydianiline, and aniline trimer (AT) functionalized graphene in DMAc, following subsequent thermal imidization at elevated temperatures. UV-vis and Raman spectroscopy verified the π–π interactions between AT and graphene. The microstructure analysis using XRD, SEM, and TEM were performed to investigate the morphology of graphene in the polyimide matrix. The thermal, mechanical, and tribological properties of polyimide/graphene nanocomposites were investigated by TGA, DMA, and friction and wear tests. In view of the ease of preparation and their superior physical properties over neat polyimide, PI/G composites prepared in this study showed promising applications as wear-resistant and self-lubricating materials.
Starting Page	3003
Ending Page	3011
Page Count	9
File Format	PDF HTM / HTML
DOI	10.1039/C6RA25168D
Alternate Webpage(s)	https://pubs.rsc.org/en/content/articlepdf/2017/ra/c6ra25168d
Alternate Webpage(s)	http://pubs.rsc.org/en/content/articlepdf/2017/ra/c6ra25168d
Alternate Webpage(s)	https://doi.org/10.1039/C6RA25168D
Volume Number	7
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article