Noncovalent Functionalization of Multiwalled and Double-Walled Carbon Nanotubes: Positive Effect of the Filler Functionalization on High Glass Transition Temperature Epoxy Resins

作者：Prado L A S de A^*; De La Vega A; Sumfleth J; Schulte K

来源：Journal of Polymer Science Part B: Polymer Physics , 2009, 47(19): 1860-1868.

DOI：10.1002/polb.21789

• carbon nanotubes functionalization
• differential scanning calorimetry (DSC)
• glass transition
• nanocomposites
• thermosets

Double-walled carbon nanotubes (DWCNTs) and multiwalled carbon nanotubes (MWCNTs) were modified using melamine to attach -NH(2) to the surface of these fillers, without previous oxidation of their graphene layers. FT-Raman, elemental (chemical) and thermogravimetric analysis, confirmed the modification, which was more extensive for DWCNTs. The potential of this modification was evaluated by adding the melamin-modified nanotubes to thermosets based on diglycidyl ether of bisphenol A (resin) and polycyclic amine (hardener). Broadening of the glass transition interval and an increase between 7 and 8 degrees C of the glass transition temperatures show better filler/matrix interaction for the nanocomposites based on melamine-modified nanotubes.

• 出版日期2009-10-1