Photopolymerization behavior of di(meth)acrylate oligomers

Abstract

Photo-initiated polymerizations of two series of di(meth)acrylate oligomers, one bisphenol-A based and the other ethylene glycol based, with a camphorquinone/tertiary amine radical photo-initiator system were studied using differential scanning calorimetry. Bisphenol-A based oligomers polymerized much faster than ethylene glycol based oligomers because the higher viscosity of E-bis-A oligomers induced an autoacceleration upon exposure to …