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Novel Polymerizable Sulfur-Containing Benzophenones as Free-Radical Photoinitiators for Photopolymerization

✍ Scribed by Hongyu Wang; Jun Wei; Xuesong Jiang; Jie Yin

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
151 KB
Volume
207
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Summary: 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 CS bond.

Structures of the polymerizable sulfur‐containing photoinitiators synthesized.

magnified imageStructures of the polymerizable sulfur‐containing photoinitiators synthesized.

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