NSTI Nanotech 2009

ROMP of norbornene catalysed by Grubbs functionalized carbon nanotubes

P. Longo, C. Costabile, F. Grisi, G. Siniscalchi, P. Ciambelli, M. Sarno, C. Leone, D. Sannino
University of Salerno, IT

Keywords: romp, Grubbs catalyst, carbon nanotubes, norbernene

Abstract:

Recently, carbon nanotubes have attracted attention for their unique structural and electronic properties, which position them as one of the leading materials for a wide array of potential nanotechnological applications. The synthesis of homogeneuos polymeric materials containing multi-walled carbon nanotubes (MWNTs), able to combine the mechanical strength and electronic conductivity of carbon nanotubes with the solubility and processability of polymers, still represents a challenge. To improve the properties of the materials, polymers can be grown directly on a nanotube surface presenting a grafted catalyst. Herein, the synthesis of polynorbornene by ring opening metathesis polymerization (ROMP) in the presence of 1st and 2nd generation Grubbs catalyst-functionalized nanotubes, is reported. A full characterization of the 1st and 2nd generation Grubbs catalyst-functionalized nanotubes was performed by IR (Infrared) and TGA (Thermogravimetric Analysis) on-line connected with a quadrupole-mass spectrometer, in order to quantify the amount of catalyst grafted to the nanotube surface. The activities of the catalyst-functionalized nanotubes in ROMP of 2-norbornene were compared with those of pure 1st and 2nd generation Grubbs catalysts and the obtained materials were characterized by DSC (Differential Scanning Calorimetry), IR, TG-DTA-MS analysis, and Scanning Electron Microscopy (SEM) images.
 
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