Spectroscopic Quantification of Kinetic Rate Constants for Epoxy-Acrylate Hybrid Photopolymerization

摘要

Photopolymerization has been used widely in coatings, adhesives, and inks, as well as in medical applications such as dental filling composites. This widespread use is due to the high level of spatial and temporal control inherent to photopolymerization and the associated energy and material savings.1"3 In order to further reduce cost and broaden the applicability of photopolymerization, hybrid resin systems have been developed by combining acrylates with epoxides or other cationic monomers. " The unique curing capabilities of these systems result in a high degree of cure for acrylate in ambient atmospheric conditions. In order to optimize the use of these hybrid systems for practical applications, it is essential to obtain a quantitative understanding of and the factors that influence each component in the system. The epoxide monomers used in this research, like most cationically polymerizable monomers, are affected by atmospheric moisture. The work presented in this paper strives to clarify kinetic effects of water on these epoxide monomers.