720209.fig.003a
(a)
720209.fig.003b
(b)
720209.fig.003c
(c)
720209.fig.003d
(d)
Figure 3: Phase separation phenomenon of the ABS resin after the thermal aging at (a) 230, (b) 240, (c) 250, and (d) 260°C for 1 h (20x).