Effect of Acid- and Ultraviolet/Ozonolysis-Treated MWCNTs on the Electrical and Mechanical Properties of Epoxy Nanocomposites as Bipolar Plate Applications

Figure 3

Fracture surface morphology of (a) pure epoxy, (b) As-produced MWCNTs, (c) acid-treated MWCNTs, and (d) UV/O₃-treated MWCNT/epoxy composites under FE-SEM.

(a)

(b)

(c)

(d)