Central Composite Design of Spraying Process to Laminate the Paper Substrates with Cellulose Nanofibers (CNF) as Green Packaging Wrap

Figure 12

SEM micrographs of the spray-coated paper at hand low magnification. The high-magnification image shows the coating coverage of the surface of the base sheet. The surface of the coated base sheet shows different sizes of the cellulose fibers. SEM micrographs reveal the closure of surface pores on the paper by cellulose nanofibers.