In-situ polymerization and multifunctional properties of surface-modified multiwalled carbon nanotube-reinforced polyimide nanocomposites. (September 2017)

• Record Type: Journal Article
• Authors: Wang, Chunyan; Xu, Jianping; Yang, Junxin; Qian, Yong; Liu, Hesheng
• Is Part Of: High performance polymers. Volume 29:Number 7(2017)
• Page Start: 797
• Page End: 807
• Publication Date: 2017-09
• Subjects: Amine-functionalized MWNT (MWNT-NH2) -- in-situ polymerization nanocomposites -- mechanical properties; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008316657862
• Languages: English
• ISSNs: 0954-0083

Abstract

In this study, strong multiwalled carbon nanotube (MWNT)–polyimide (PI) matrix interfaces were designed and constructed to obtain high-performance nanocomposites via in-situ polymerization. MWNTs with reactive amino groups were produced by the covalent linking of phenylenediamine to the surface of MWNTs by amide bonds; this material exhibited excellent dispersibility and compatibility with the PI matrix. The incorporation of amine-functionalized MWNT (MWNT-NH2 ) significantly improved the macroscopic properties of the PI-based nanocomposites. A 50.5% increase in the tensile strength and an 83.1% increase in the Young's modulus were achieved by 3.0 wt% MWNT-NH2 loading. Furthermore, the storage modulus, thermal stability, and glass transition temperature of the nanocomposite clearly increased by adding MWNT-NH2 . The success of this method provides a good rational for developing high-performance polymer-based nanocomposites.