FTIR-ATR STUDIES OF INTERFACIAL INTERACTIONS IN EPOXY RESIN POLYMER LAMINATE STRUCTURES/

FTIR-ATR spectroscopy has been used to investigate the interdiffusion of acrylic or alkyd-based polymer coatings with an epoxy resin underla yer. It has been shown that there is considerable penetration on a sho rt (hours) time scale and that strong hydrogen-bonding interactions oc cur between top coat and resin. It has also been shown that a trimeric isocyanate diffuses into the epoxy resin film and that this process d epends on the degree of cross-linking of the resin. These data have im portant implications for the design and use of paint and other industr ial coatings.