736474.fig.002a
(a)
736474.fig.002b
(b)
736474.fig.002c
(c)
736474.fig.002d
(d)
736474.fig.002e
(e)
736474.fig.002f
(f)
Figure 2: SEM images of INI-treated fibers. (a) 100°C (Na2CO3 : CaCl2 = 1 : 1, mol : mol), (b) 100°C (Na2CO3 : CaCl2 = 1 : 2, mol : mol), (c) 130°C (Na2CO3 : CaCl2 = 1 : 1, mol : mol), (d) 130°C (Na2CO3 : CaCl2 = 1 : 2, mol : mol) at 1 : 2, (e) 160°C (Na2CO3 : CaCl2 = 1 : 1, mol : mol), and (f) 160°C (Na2CO3 : CaCl2 = 1 : 2, mol : mol). The white arrows designated the CaCO3 particles.