Hydrodynamic effect on secondary phase separation in an epoxy resin modified with polyethersulfone.
writer：Tang, X. L.; Zhang, L. X.; Wang, T.; Yu, Y. F.; Gan, W. J.; Li, S. J.
keywords：thermoplastics, thermoset, phase separation
source：期刊
specific source：Macromolecular Rapid Communications 2004, 25, (15), 1419-1424.
Issue time：2004年
The evolution of the morphologies in blends of epoxy/4,4'-methylenebis(2,6-dimethylaniline)/polyethersulfone was followed by time-resolved light scattering, optical microscopy and scanning electron microscopy. The results suggest that, once the diffusion of epoxy molecules cannot follow the geometrical growth, a secondary phase separation occurs, even in the droplet morphology, in which the size of the epoxy-rich domain grows as usual. The viscoelastic effect of polyethersulfone is also discussed.