Studies of Photopolymerization Efficiencies of Six Novel Water-Soluble Thioxanthone Initiators

By analyzing IR spectra of monomer SR604 with six novel photoinitiators of water-soluble thioxanthone type, the photopolymerization efficiencies of these initiators during UV curing process were compared. The rate of conversion was counted using relative absorption area method. The relationships between structure and photochemical properties were also discussed.