Record number :
1227809
Title of article :
Further EPR-spin trapping studies of the photoinitiating activity of Irgacure 369
Author/Authors :
Angelo Alberti، نويسنده , , Massimo Benaglia، نويسنده , , Dante Macciantelli، نويسنده , , Stefano Rossetti، نويسنده , , Marco Scoponi، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
6
From page :
3022
To page :
3027
Abstract :
The radicals formed upon visible light irradiation of the photoinitiator 2-benzyl-2-dimethylamino-4′-morpholinobutyrophenone (Irgacure 369), 1, were investigated by means of EPR spectroscopy coupled with the spin trapping technique both in the absence and in the presence of a monomer. The results suggest a dual behavior of 1 that may act both as a Type I and a Type II photoinitiator. From experiments carried out in the presence of 2-ethoxythioxanthone (Pila 124), 2, an additive commonly used in combination with 1 as sensitizer, it is inferred that 2 mainly acts via hydrogen abstraction from 1.
Keywords :
Photoinitiators , Sensitizers , EPR spectroscopy , Spin trapping , Radical polymerization
Journal title :
European Polymer Journal(EPJ)
Serial Year :
2008
Link To Document :
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