Photocyclic initiating systems for free radical photopolymerization under visible light. Application to holographic recording

Xavier Allonas (1) , Christian Ley (1) , Ahmad Ibrahim (1) , Olga Tarzi (1) , Aurélie Chan Yong (2, 3) , Christiane Carré (2)

1 LPIM - Laboratoire de Photochimie et d'Ingénierie Macromoléculaires
2 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
3 OPT - Département Optique

A set of photoinitiating systems (PIS) for free radical photopolymerization was studied using real-time FTIR and holographic recording. The efficiency of the photoinitiating system can be drastically increased when a redox additive is added to the conventional dye/coinitiator system by virtue of photocyclic behaviour. Holographic recording underlines the differences in photoinitiating system reactivity, allowing diffraction efficiencies close to unity for the most reactive PIS.

Mots clés: Photoinitiating systems; free radical photopolymerization; volume holographic gratings

Domaines: Matériaux

Xavier Allonas, Christian Ley, Ahmad Ibrahim, Olga Tarzi, Aurélie Chan Yong, et al.. Photocyclic initiating systems for free radical photopolymerization under visible light. Application to holographic recording. XI Encuentro Latinoamericano de Fotoquimica y Fotobiologia (XI Elafot), Oct 2012, Cordoba, Argentina. ⟨hal-00941729⟩