Semiconducting Single-Walled Carbon Nanotubes as Radical Photoinitiators

Research areas:
  • Uncategorized
Year: 2011
Type of Publication: Article
  • Marco Sangermano, Nigel Reuel Francesco Marino
Journal: Macromolecular Chemistry and Physics Volume: 212
Number: 14 Pages: 1469-1473
Month: JUL 15 2011
PT: J; TC: 1; UT: WOS:000292541800005
Upon photoexcitation, SWNTs, which have semiconducting behavior, can generate radicals that in turn start acrylic polyaddition reactions. The high efficiency of photoinitiation of polyethyleneglycol diacrylate achieved in the presence of SWNTs is evidenced by the high acrylic double bond conversion reached in the presence of the carbon filler and confirmed by the high gel content values of the cured films. Thermal analyses show that the effect of T(g) increases with increased SWNT content in the formulations. Morphology investigations show a good dispersion and distribution of the SWNTs within the polymeric coating. It is demonstrated that the use of semiconducting SWNTs can combine the advantages of using them both as the filler and photoinitiator at the same time to achieve composite materials with enhanced properties.