KINETIC-STUDIES OF A NEW PHOTOINITIATOR HYBRID SYSTEM BASED ON CAMPHORQUINONE-N-PHENYLGLICYNE DERIVATIVES FOR LASER POLYMERIZATION OF DENTAL RESTORATIVE AND STEREOLITHOGRAPHIC (3D) FORMULATIONS
Z. Kucybala et al., KINETIC-STUDIES OF A NEW PHOTOINITIATOR HYBRID SYSTEM BASED ON CAMPHORQUINONE-N-PHENYLGLICYNE DERIVATIVES FOR LASER POLYMERIZATION OF DENTAL RESTORATIVE AND STEREOLITHOGRAPHIC (3D) FORMULATIONS, Polymer, 37(20), 1996, pp. 4585-4591
The new photoinitiating system based on camphorquinone-N-phenylglycine
and its derivatives is proposed for replacing widely used photoinitia
tor camphorquinone-amines for photocuring of polymeric dental formulat
ions. The most important advantage of this new system is that these am
ino acids should be biologically less harmful than amines. However, it
is hard to differentiate between the two for dental purposes without
detailed studies. The kinetics of photoinitiated polymerization shows
that the electron-proton transfer occurs via formation 'collision' and
'excited charge-transfer complexes', and can be described either by t
he classical Marcus equation or by the reactivity of free radicals for
med. This new photoinitiating system can also be used for the photocur
ing of stereolithographic (3D) formulations. Copyright (C) 1996 Elsevi
er Science Ltd.