Kenaf Bast Fibers—Part I: Hermetical Alkali Digestion

Figure 4

SEM images of the fracture surface of the PP composites reinforced with kenaf fibers digested at (a) 80°C, (b) 110°C, (c) 130°C, and (d) 160°C.

(a)

(b)

(c)

(d)