The introduction of CNC-MNPs appeared to decrease the smoothness of the scaffold, creating visible clusters of entangled fibers. This observation suggested an inhomogeneous distribution of CNC-MNPs within the CNC suspension. The cause of this inhomogeneity could be the aggregation of the uncoated MNPs, as observed in a previous ferrogel study . The MNPs are also known to be effective ice nucleation sites to induce changes in the formation of ice crystals. The effect of MNP-induced surface roughness is more pronounced when high-temperature freezing is involved (Figure