Acridone derivatives as high performance visible light photoinitiators for cationic and radical photosensitive resins for 3D printing technology and for low migration photopolymer property. (20th December 2018) - Abdallah, Mira
Abstract: This paper is devoted to study two acridone derivatives (A-2DPA and A-2PTz). These acridone compounds are synthesized and proposed as high performance visible light photoinitiators, in the presence of an iodonium salt or/and an amine (NPG or EDB), for both the free radical polymerization of (meth)acrylates and the cationic polymerization of epoxides upon irradiation with LED@405 nm. Excellent polymerization initiating abilities are found, and high final monomer conversions are obtained. A full picture of the involved photochemical mechanisms is provided. This paper is also concerned with the use of these acridone-based systems in new 3D printing resins. Finally, the usage of the new acridone derivatives for photopolymers with low migration properties is particularly outlined. Graphical abstract: Highlights: New acridone compounds as high performance visible light photoinitiators for both radical and cationic polymerizations. A full picture of the involved photochemical mechanisms is provided. Acridone-based systems in new 3D printing resins. New acridone derivatives for photopolymers with low migration properties are particularly outlined.