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International Journal of Bioprinting Nanoclay biopolymer inks for 3D printing

Figure 5. FTIR spectra of the crosslinked biopolymer-based samples: (A) alginate–salecan samples and (B) alginate–salecan composites samples.
considering the scanning resolution (image pixel size = but compact morphology, with a reduced pore/solid
5 µm), some quantitative characteristics were extracted matter ratio. On the other hand, AV2 is characterized by
from the tomograms, listed in Table 4—the surface of the a more common morphology for objects fabricated via
object, porosity, as well as the average wall thickness and lyophilization. Starting with sample AV2C1, the pores and
pore diameter.
shape of the deposited filaments showed drastic changes.
Their exhaustive distribution per size domains is Probably because of the increasing amount of reinforcing
plotted in the charts of Figure 7 for samples AA0 to agent, more physical interactions were formed between
AV2C1. Printed sample morphology differs with the
amount of inorganic phase they contain. The composition the two phases of the composite and the filaments tended
also has an impact on the pore patterning during freeze- to maintain their original shape and CAD model fidelity.
drying process; the pristine AA0 sample exhibited a thin Another reason for that might be linked to the increase of

Volume 10 Issue 1 (2024) 190 https://doi.org/10.36922/ijb.0967