INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Visible Light Induced Cationic Polymerization of Epoxides by Using Multiwalled Carbon Nanotubes
Autor/es:
ENZO LAURENTI; DAMIAN RODRIGUEZ; MONICA GONZALEZ; SANGERMANO MARCO
Revista:
MACROMOLECULAR RAPID COMMUNICATIONS
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Lugar: Weinheim; Año: 2018
ISSN:
1022-1336
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 pro-cess. 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.
