Abstract

1,3-Dioxane diphenyl, a novel photoinitiator for free-radical polymerization, was synthesized and characterized. UV-Vis absorption spectroscopy was used to investigate its photochemical behavior during the photophysical process. The photopolymerization kinetics of 1,3-dioxane diphenyl was studied by realtime infrared spectroscopy. There was an optimum curing rate with the increase of 1,3-dioxane diphenyl concentration. Both the polymerization rate and final conversion increased with the increase in light intensity. 1,3-Dioxane diphenyl was the most efficient photoinitiator for tripropylene glycol diacrylate and other acrylate monomers. 1,3-Dioxane diphenyl was a more effective photoinitiator than benzophenone/ethyl-4-dimethylaminobenzoate.

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