Microphase structure of photopolymerizable hybrid adhesives based on urethane-acrylates, alkyd-epoxide resins and polyisocyanates☆

Low-angle X-ray scattering has been used to investigate polymeric materials based on urethane-acrylates, alkyd-epoxide resins and polyisocyanates. Two-phase structures are formed during the separate curing of the alkyd-epoxide and urethane-acrylate components. Polymeric materials containing both components are made up of interconnected microphase regions consisting of the urethane-acrylate and the alkyd-epoxide components with a strongly branched interphase surface.