Transmission Electron Microscopy (TEM) of both LA-CNCs and
AA-CNCs were performed and compared with HCl-CNCs. Inspection
of the TEM images in Fig. 4 shows that all three of these products
consist of nanofibers with lengths of approximately of 200 nm and
widths of ca. 20 nm such that the aspect ratio is about 10.
Furthermore, the fiber morphologies for LA-, AA- and HCl-CNCs are
similar in appearance.