Mercaptoalkoxy-thioxanthones as novel photoinitiators for free radical polymerization – mechanistic study (in English)
Polimery 2019, No 3, 190
Three mercaptoalkoxy-thioxanthones were developed as new photoinitiators for radical polymerization. These compound scan act as either one- or two-component photoinitiating systems.The quenching of the excited triplet states of thioxanthone derivatives by aromatic amines was investigated in dimethyl sulfoxide (DMSO). Based on the mechanism of the intermolecular electron-transfer process, we proposed sequence of reactions leading to the formation of radicals that are capable of initiating the polymerization reaction.