Two-Dimensional ATR FT-IR Spectroscopic Study on Glycol Diffusion in a Cured Epoxy Membrane

摘要: A novel experimental approach, that is, two-dimensional (2D) correlation analysis based on time-resolved attenuates total reflection (ATR) FT-IR spectroscopy, has been used to study the diffusion behavior of ethylene glycol molecules into EP and EPB (novolac epoxy resin cured with novolac or butyrate resin, respectively). The these systems is discussed compared water. Ethylene aborbed in can be classified two types (free bound types), while a third type ( referred as specific type) also observed, which differs from water sorption behavior. In particular, it interesting find hydrogen bonding involves hydroxyl groups rather than group polar networks (carbonyl group), similar example not previously observed. addition, both EPB, diffuse faster any other types.