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A series of fluorocarbon chain terminated polyetherimide is added to epoxy resin, and the effect of molecular weight on the process of phase separation is studied by time-resolved light scattering (TRLS), differential scanning calorimeter (DSC), scanning microscopy (SEM). The results indicate that the phase separation rate decreases due to the preventing effect in-duced by low surface energy of fluorocarbon chain terminated polyetherimide. In addition, evolu-tion time of morphology is shortened and the domain size decreases with the introduction of fluorocarbon chain terminated polyetherimide. Furthermore, when the molecular weight of fluorocarbon chain terminated polyetherimide increases, the morphology can change from dis-persed phase to co-continuous phase. Thus, changing the molecular weight of fluorocarbon chain terminated polyetherimide can control the morphology of the epoxy/polyetherimide blend, which is of great significance in many industries.
A series of fluorocarbon chain terminated polyetherimide is added to epoxy resin, and the effect of molecular weight on the process of phase separation is studied by time-resolved light scattering (TRLS), differential scanning calorimeter (DSC), scanning microscopy (SEM). The results indicate that the phase separation rate due due to the preventing effect in-duced by low surface energy of fluorocarbon chain terminated polyetherimide. In addition, evolu tion time of morphology is shortened and the domain size decreases with the introduction of fluorocarbon chain terminated The molecular weight of fluorocarbon chain terminated polyetherimide can control the morphology of the epoxy / polyetherimide blend, which is of great significance in many industries.