728235.fig.002a
(a)
728235.fig.002b
(b)
728235.fig.002c
(c)
728235.fig.002d
(d)
Figure 2: SEM micrographs of fractured surface of the composites: (a) pure epoxy; (b) EP/LCPU = 100/5; (c) EP/LCPU/Al2O3 = 100/5/50; (d) EP/LCPU/Al2O3 = 100/5/70.