A Novel Graphene Nanoplatelets (GNPs) Dispersant: Polyaryletherketones with Pendent Pyrene Groups. Issue 9 (4th April 2019)

• Record Type: Journal Article
• Authors: Xu, Da; Gao, Yanwei; Sun, Yang; Wang, Zhaoyang; Jiang, Zhenhua; Jiang, Xiangyu; Zhang, Haibo
• Is Part Of: Macromolecular chemistry and physics. Volume 220:Issue 9(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-04-04
• Subjects: composites -- dispersion -- graphene nanoplatelets -- polyaryletherketone with pendent pyrene -- Suzuki reaction; Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201800553
• Languages: English
• ISSNs: 1022-1352

Abstract

Abstract: Polyaryletherketones (PAEKs) with pendant pyrene groups are prepared and used to functionalize and disperse graphene nanoplates (GNPs). A variety of polymers with a range of pyrene contents are studied. A monomer with pyrene and two hydroxyl groups is designed and synthesized through the Suzuki reaction and used to prepare a series of pyrene‐functioned PAEKs (Py‐PAEKs) by copolymerization. Experiments demonstrate that Py‐PAEKs have not only excellent solubility, but also excellent mechanical properties and outstanding heat resistance. In the same treatment condition, the concentration of GNPs that are modified by Py‐PAEK with 40 molar percentage of pyrene (Py‐40) increases 88 times of the concentration of pure GNPs in NMP. In addition, adding 0.5% GNPs, which is functionalized by Py‐40 to PEEK resin, improves the flexural strength of polymer composite nearly 12% and while the tensile strength of these composites improves nearly 10% with a doubling of the strain at break. Abstract : Polyaryletherketones with pendant pyrene groups are prepared and used to functionalize and disperse graphene nanoplates (GNPs), through the pi stacking interactions between the pyrene group and GNPs. And then disperse the functionalized GNPs in solvents and polymer matrix.