An amphipathic thioxanthone-anthracene photoinitiator for free-radical polymerization

Authors : Deniz TUNÇ, Burçin GACAL, Yusuf YAĞCI

Pages : 525-537

Doi:10.3906/kim-1301-24

View : 20 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A novel thioxanthone-anthracene insert ignore into journalissuearticles values(TX-A); photoinitiator possessing an octyl group, TX-A-Oct, as amphipathic photoinitiator was synthesized by click chemistry. Its ability to initiate photopolymerization of various monomers, namely methyl methacrylate insert ignore into journalissuearticles values(MMA);, acryl amide insert ignore into journalissuearticles values(Am);, butyl acrylate insert ignore into journalissuearticles values(BA);, styrene insert ignore into journalissuearticles values(St);, and a multifunctional monomer trimethylolpropane triacrylate insert ignore into journalissuearticles values(TMPTA);, was examined in both the presence and absence of air. TX-A-Oct was found to be effective in initiating polymerization also in the absence of a co-initiator. UV, FTIR, and fluorescence spectroscopic analysis and polymerization studies revealed that depending on the conditions photoinitiations occur through both anthracene and thioxanthone chromophoric groups by hydrogen abstraction and endoperoxide formation processes, respectively.
Keywords : Photopolymerization, free radical polymerization, photoinitiator, click chemistry, thioxanthone anthracene