Layer-by-Layer Fabrication of PAH/PAMAM/Nano-CaCO₃ Composite Films and Characterization for Enhanced Biocompatibility

Figure 4

TEM and SAED of (a, b) amorphous calcium carbonate, (c, d) vaterite, and (e, f) calcite obtained from the medium cross-linked of (PAH/PAMAM)_7.5-CaCO₃ from PVDF-HFP substrate.