Since the crystal structures of activators could significantly
influence their performance during the cure reaction, XRD experiments
were conducted on the pristine nZnO and cZnO powders to
evaluate the type, size and orientation ofthe micron and nano sized
particles crystallites. As can be seen in Fig. 1, three characteristic
peaks are appeared in XRD patterns of both samples, corresponding
to (1 0 0), (0 0 2) and (1 0 1) lattice planes of ZnO wurtzite
structure [15]. These diffraction peaks can be well indexed to the