info:eu-repo/semantics/article
Visible Light Induced Cationic Polymerization of Epoxides by Using Multiwalled Carbon Nanotubes
Fecha
2018-07Registro en:
Sangermano, Marco; Rodriguez, Damian; Gonzalez, Monica Cristina; Laurenti, Enzo; Yagci, Yusuf; Visible Light Induced Cationic Polymerization of Epoxides by Using Multiwalled Carbon Nanotubes; Wiley VCH Verlag; Macromolecular Rapid Communications; 39; 13; 7-2018; 1-4
1022-1336
CONICET Digital
CONICET
Autor
Sangermano, Marco
Rodriguez, Damian
Gonzalez, Monica Cristina
Laurenti, Enzo
Yagci, Yusuf
Resumen
The visible light induced cationic polymerization of epoxides can be achieved by means of multiwalled carbon nanotubes (MWCNTs), which act as visible light photoinitiators via a radical-induced cationic photopolymerization process. When MWCNTs are irradiated with longer wavelengths (above 400 nm), they generate carbon radicals, by means of hydrogen abstraction from the epoxy monomer; these radicals are oxidized in the presence of iodonium salt to a carbocation that is sufficiently reactive to start the cationic ring-opening polymerization of an epoxy monomer. These mechanisms have been supported by electron paramagnetic resonance analysis.