Mira Abdallah, Akram Hijazi, Pier Giorgio Cozzi, Andrea Gualandi, Frederic Dumur, Jacques Lalevee
Macromolecular Chemistry and Physics, 2000404 ()
Mira Abdallah, Akram Hijazi, Pier Giorgio Cozzi, Andrea Gualandi, Frederic Dumur, Jacques Lalevee
Macromolecular Chemistry and Physics, 2000404 ()
This work aims at using two borane derivatives, namely Borane A: B(C6F5)(3) and Borate B: C32H12BF24Na as additives for the cationic polymerization of epoxy silicones under visible light, in the presence of coumarins as photosensitizers and 4-isopropyl-4 ‘-methyldiphenyl iodonium tetrakis(pentafluorophenyl)borate (SC939). The effect of boron compounds on the absorption and the emission spectra of a coumarin is particularly outlined. These two boron compounds can improve both the polymerization rate and the final monomer conversion. Moreover, the effect of adding water on the reactivity of the system is studied. It should be noted that the studied boron additives are able to enhance in an interesting way the polymerization rate when light irradiation is switched off through a dark polymerization (DP) mechanism. This latter behavior is highly desired for practical applications. Finally, the very high photoreactivity of boron compounds is employed for the development of new cationic 3D printing resins upon exposure to a light emitting diode (LED) projector at 405 nm, as well as for direct laser write experiments, by means of a laser diode at 405 nm. The 3D polymerization occurs through a cationic process which can be quite useful in order to reduce the shrinkage usually observed in radical polymerization.
Saikat Mukherjee, Mario Barbatti
JOURNAL OF CHEMICAL THEORY AND COMPUTATION, ()
Noemie Gil, Baptiste Caron, Didier Siri, Julien Roche, Slim Hadiouch, Douriya Khedaioui, Stephane Ranque, Carole Cassagne, Damien Montarnal, Didier Gigmes, Catherine Lefay, Yohann Guillaneuf
MACROMOLECULES, ()
Maya Wasilewski, Christophe Curti, Cyrielle Bouguergour, Camille Panuccio, Patrick Thevin, Nicolas Primas, Edouard Lamy, Patrice Vanelle
EUROPEAN JOURNAL OF HOSPITAL PHARMACY, ()
Basile Bouvet, Saad Sene, Gautier Felix, Jeffrey Havot, Gerard Audran, Sylvain R. A. Marque, Joulia Larionova, Yannick Guari
NANOSCALE, ()
Laurence Feray, Michele P. Bertrand, Aurelien Galibert-Guijarro
SYNTHESIS-STUTTGART, ()
Maelle Lages, Noemie Gil, Paul Galanopoulo, Julie Mougin, Catherine Lefay, Yohann Guillaneuf, Muriel Lansalot, Franck D'Agosto, Julien Nicolas
MACROMOLECULES, ()