Synthesis and properties of polyimide nanocomposite containing dopamine-modified graphene oxide. (April 2019)

• Record Type: Journal Article
• Authors: Qin, Songlv; Qiu, Shihui; Cui, Mingjun; Dai, Zhendong; Zhao, Haichao; Wang, Liping
• Is Part Of: High performance polymers. Volume 31:Number 3(2019)
• Page Start: 331
• Page End: 340
• Publication Date: 2019-04
• Subjects: Polyimide -- graphene oxide -- dopamine -- thermal stability -- mechanical properties; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008318768857
• Languages: English
• ISSNs: 0954-0083

Abstract

Polyimide (PI)/graphene oxide (GO) nanocomposites with different loads of polydopamine-modified graphene oxide (PI/PDA-GO) were prepared. Meanwhile, the as-prepared PI/PDA-GO nanocomposites were compared with pure PI in terms of their morphologies, thermal and mechanical properties. Only a minor mass fraction of PDA-GO was required to enhance the mechanical and thermal properties of PI. The tensile strength of 1 wt% PDA-GO/PI was increased by 12% and the tensile modulus of 1 wt% PDA-GO/PI nanocomposites was increased by 25% compared to those of pure PI. Vickers hardness of the PI hybrid films increased with PDA-GO load and the maximum enhancement in Vickers hardness was observed at 2 wt% PDA-GO loading. On the other hand, the storage modulus of 1 wt% PDA-GO/PI was increased by 54% than that of neat PI. In consideration of the facile preparation of PDA-coated GO, superior physical properties over neat PI, PI/PDA-GO nanocomposites showed promising applications as functional films or composites.