Comparative Study on Properties of Polylactic Acid Nanocomposites with Cellulose and Chitin Nanofibers Extracted from Different Raw Materials

Figure 5

The FE-SEM images of fracture surfaces for 40 wt% nanofibers/PLA composites: (a) poplar CNFs, (b) cotton CNFs, (c) crab shell CHNFs, and (d) prawn shell CHNFs.

(a)

(b)

(c)

(d)