Acridone derivatives as high performance visible light photoinitiators for cationic and radical photosensitive resins for 3D printing technology and for low migration photopolymer property

Abdallah Mira (1) , Huong Le (2) , Akram Hijazi (3) , Michael Schmitt (1, 4) , Bernadette Graff (1) , Frédéric Dumur (5) , Thanh-Tuan Bui (2) , Fabrice Goubard (2) , Jean-Pierre Fouassier (1) , Jacques Lalevee (1)

1 IS2M - Institut de Science des Matériaux de Mulhouse
2 LPPI - Laboratoire de Physico-chimie des Polymères et des Interfaces
3 Université Libanaise
4 UNISTRA - Université de Strasbourg
5 ICR - Institut de Chimie Radicalaire

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 photopolyrners with low migration properties is particularly outlined.

Domains: Chemical Sciences

Abdallah Mira, Huong Le, Akram Hijazi, Michael Schmitt, Bernadette Graff, et al.. Acridone derivatives as high performance visible light photoinitiators for cationic and radical photosensitive resins for 3D printing technology and for low migration photopolymer property. Polymer, 2018, 159, pp.47--58. ⟨10.1016/j.polymer.2018.11.021⟩. ⟨hal-02091871⟩