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EnglishThe radicals formed upon visible light irradiation of the photoinitiator 2-benzyl-2-dimethylamino- 40-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. 2008 Elsevier Ltd. All rights
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| Data di pubblicazione: | 2008 | |
| Titolo: | Further EPR-spin trapping studies of the photoinitiating activity of Irgacure 369 | |
| Autori: | A. Alberti; M. Benaglia;D. Macciantelli; S. Rossetti; M.Scoponi | |
| Rivista: | EUROPEAN POLYMER JOURNAL | |
| Abstract: | The radicals formed upon visible light irradiation of the photoinitiator 2-benzyl-2-dimethylamino- 40-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. 2008 Elsevier Ltd. All rights | |
| Digital Object Identifier (DOI): | 10.1016/j.eurpolymj.2008.06.043 | |
| Handle: | http://hdl.handle.net/11392/1831702 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
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