Figure 4.

Bulk and microscopic morphologies of various nanocellulosic materials. (A) Bacterial NC (BNC) and its morphology as observed under scanning electron microscopy; (B) cellulose nanofibril (CNF) hydrogel and its morphology as observed under TEM; (C) CNC suspension and its observed morphology under TEM.⁸⁵ Photography courtesy: Wang, X.; Wang, Q.; and Xu, C. Reprinted with permission from Wang, X.; Wang, Q.; and Xu, C. Nanocellulose-based inks for 3d bioprinting: Key aspects in research development and challenging perspectives in applications—a mini review. Bioengineering2020,7, 40. Copyright 2020, the authors under the creative commons license 4.0.