Optimization of a photopolymerizable material based on a photocyclic initiating system using holographic recording - Archive ouverte HAL
Article Dans Une Revue Photochemical & Photobiological Sciences Année : 2012

Optimization of a photopolymerizable material based on a photocyclic initiating system using holographic recording

Résumé

A set of photoinitiating systems (PIS) for free radical photopolymerization was studied using time-resolved spectroscopic experiments, real-time FTIR and holographic recording. It is shown that 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. The homogeneous photopolymerization process was found to reach a fast vitrification, limiting the conversion at about 55%. By contrast, holographic recording underlines the differences in photoinitiating system reactivity, allowing diffraction efficiencies close to unity for the most reactive PIS.
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Dates et versions

hal-00920012 , version 1 (17-01-2014)

Identifiants

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Ahmad Ibrahim, Christian Ley, Xavier Allonas, Olga Tarzi, Aurélie Chan Yong, et al.. Optimization of a photopolymerizable material based on a photocyclic initiating system using holographic recording. Photochemical & Photobiological Sciences , 2012, 11, pp.1682-1690. ⟨10.1039/C2PP25099C⟩. ⟨hal-00920012⟩
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