作者: Mira Abdallah , Frédéric Dumur , Bernadette Graff , Akram Hijazi , Jacques Lalevée
DOI: 10.1016/J.DYEPIG.2020.108580
关键词:
摘要: Abstract In this research, high performance dyes based on triphenylamine, cinnamaldehyde and indane-1,3-dione derivatives have been designed/synthesized evaluated as photoinitiators for visible light photopolymerization. The introduction of light-emitting diodes (LEDs) low-cost secured sources irradiation is one the major purposes in study, where a LED at 405 nm was used both cationic polymerization (CP) thin epoxide samples free radical (FRP) TMPTA films. proposed showed very efficiencies presence two-component photoinitiating systems Dye/Iodonium salt (Iod) couples or Dye/Amine (such N-Phenylglycine (NPG) ethyl 4-(dimethylamino)benzoate (EDB)) FRP and/or CP, highlighting their importance through photo-oxidation (with Iod) process but also photo-reduction amine) process. examined are able to initiate acrylate films three-component (Dye/Iod/NPG) rates (Rp) great final reactive function conversions (FCs) were achieved. A new dye (Dye 4) here first time (never synthesized before) synthetic pathway Dye 3 established. Objectives work concern study abilities different using FTIR technique chemical mechanisms which mainly solution. use investigated 3D printing experiments (using projector laser diode @405 nm) particularly outlined. Finally, production thick glass fiber photocomposites presenting excellent depth cure accomplished these near-UV conveyor: LED@395 nm).