• 文献标题:   Nanocomposites via a direct graphene-promoted "click"-reaction
  • 文献类型:   Article
  • 作  者:   NIA AS, RANA S, DOHLER D, OSIM W, BINDER WH
  • 作者关键词:   graphene nanocomposite, crosslinking, copper catalyzed azidealkyne click reaction cuaac
  • 出版物名称:   POLYMER
  • ISSN:   0032-3861 EI 1873-2291
  • 通讯作者地址:   Univ Halle Wittenberg
  • 被引频次:   14
  • DOI:   10.1016/j.polymer.2015.10.013
  • 出版年:   2015

▎ 摘  要

The generation of graphene nanocomposites by curing of a new resin material via the Cu(I) catalyzed azide-alkyne click reaction (CuAAC) has been investigated by using graphene supported copper nanoparticles (TRGO-Cu2O) as catalyst directly embedded into the curing resin. Low molecular weight trivalent azide and alkyne were used as resin-components for "click" crosslinking by graphene supported copper nanoparticles (TRGO-Cu2O) in comparison to different commercially available homo-and heterogeneous copper catalysts. The kinetics of the crosslinking process were investigated by differential scanning calorimetry (DSC) and melt rheology, proving the superior performance of the (TRGO-Cu2O). Additionally the physical and mechanical properties of the finally cured resins were studied via meltrheology, broadband dielectric spectroscopy (BDS) and thermogravimetric analysis (TGA), proving the outstanding catalytic activity of the TRGO-Cu2O catalyst performing "click" crosslinking without addition of base or oxidizing/reducing agents. Along with its catalytic performance, TRGO-Cu2O acts as reinforcing filler, significantly improving the mechanical and physical properties, as well as the conductivity and the thermal stability of the final resin material. (C) 2015 Elsevier Ltd. All rights reserved.