| 초록 |
The photo-curing behavior of mixtures of urethane acrylate oligomer with acrylate monomers was investigated using time-resolved FTIR spectroscopy and photo-DSC. The photo-curing process of one of the several acrylate components was monitored in FTIR experiments using a deuterated compound. In order to identify specific acrylate components involved in the free radical polymerization of three acrylate components, the reaction of acrylate functional groups as a function of time was monitored by observing the characteristic IR peaks of each component. For predicting the composition of the copolymer formed at certain moments during the copolymerization, it is necessary to understand differences in acrylate monomer reactivity that affects the sequence distribution of different repeat units in the copolymer molecules. Based on such information on acrylate chain structure of copolymers, it is possible to explain different mechanical properties of photo-cured mixtures of acrylate oligomers. |
