| 초록 |
Self-photoinitiating acrylate(SPIA) which can undergo self-initiation under UV irradiation was synthesized by a Michael donor with a Michael acceptor in the presence of a base catalyst. We found out that both the curing rate and the conversion were too low for the self-curing reaction of SPIA. In order to have the SPIA curing properties improved, we introduced the SPIA/cationic hybrid system and observed the effects of the addition of commercial free radical type monomer, photoinitiator and sensitizer on the curing behaviors. The SPIA polymerizations were investigated by photo-differential scanning calorimeter (photo-DSC) and surface physical properties such as pendulum hardness and pencil hardness. The results showed that the polymerization reactivity and the ultimate conversion were enhanced by the addition of monomer, sensitizer and Norrish I type photoinitiator. SPIA/cationic hybrid system was the best suitable to improve the SPIA curing properties. |
