| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1400564 | European Polymer Journal | 2012 | 7 Pages |
Bifunctional co-initiators containing amine and silane groups (silylamines) are proposed for radical photopolymerization in experimental conditions (e.g. low light intensity, low viscosity thin samples, UV and visible light exposure) where a strong deleterious oxygen effect occurs. In the presence of benzophenone, isopropylthioxanthone, camphorquinone, 2,6-diphenyl-4-(4′-dimethylaminophenyl) thiopyrylium tetrafluoroborate, chloro-HABI and cleavable photoinitiators, these compounds show a high reactivity under air, even better than that observed for a reference amine as a hydrogen donor. The associated mechanisms are investigated by laser flash photolysis (LFP) and Kinetic ESR.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New co-initiators for free radical polymerization in aerated conditions are proposed. ► New bifunctional co-initiators containing amine and silane groups (silylamines). ► The amine for efficient initiation process and the silane to overcome the oxygen inhibition. ► Polymerization under visible light or very soft irradiation conditions. ► Chemical mechanisms investigated by ESR experiments.
