Abstract
AbstractSummary: Three novel polymerizable sulfur‐containing benzophenone photoinitiators, MAATPBP, CMAATPBP and BMAATPBP, were synthesized. These novel photoinitiators possess strongly red‐shifted maximum UV absorption and very weak fluorescence emission. The photopolymerization of two monomers with different functionality, bifunctional HDDA and trifunctional TMPTA, initiated by these three polymerizable photoinitiators, was studied by photo‐DSC using the unsaturated tertiary amine DMAEMA as the coinitiator. The results show that all the polymerizable photoinitiators were highly efficient and different photoinitiators exhibited different behaviors towards different monomers: BMAATPBP was the most efficient for HDDA; MAATPBP was the most efficient for TMPTA. They could also efficiently initiate the photopolymerization without the coinitiator because of photolysis at the CS bond.Structures of the polymerizable sulfur‐containing photoinitiators synthesized.magnified imageStructures of the polymerizable sulfur‐containing photoinitiators synthesized.
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