Azo dye as photoinitiator for Free Radical Polymerization under LED irradiation
Palavras-chave:
Azo dyes, Organic photoinitiator, Photopolymerization, Organic photocatalyst, LEDResumo
Photopolymerization is facing a revolution with the development of energy-efficient light sources, namely LEDs. With the ongoing efforts to develop photoinitiating systems outperforming the existing ones in terms of polymerization rates and monomer conversions, the search for new families of dyes that have not been investigated yet in the context of photopolymerization is still very active from the academic viewpoint.
In this context, 3-ethoxy-5-phenyl-azo was synthesized and characterized using spectroscopic techniques and its effectiveness as a photoinitiator of the FRP reaction is being investigated under light conditions, starting with a 365 nm LED in the laminate condition, resulting in the system with the photoinitiator and the monomer: 3-ethoxy-5-phenyl-azo/TMPETA. Besides, in the tests performed, the dye demonstrated good efficiency.
Referências
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2. LALEVÉE, J.; TEHFE, M.-A.; MORLET-SAVARY, F.; GRAFF, B.; DUMUR, F.; GIGMES, D.; BLANCHARD, N.; FOUASSIER, J. P. Photoredox catalysis for polymerization reactions. Chimia, v. 66, n. 6, p. 439–441, 2012.
3. LALEVÉE, J.; DUMUR, F.; BLANCHARD, N.; FOUSSARD, J. P. Photopolymerization reactions: On the way to a green and sustainable chemistry. Applied Sciences, v. 3, n. 2, p. 490–514, 2013
