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

Figure 3

SEM and EDX analysis of (PAH/PAMAM)_7.5-CaCO₃ composite. Elemental mapping of calcium, carbon, and oxygen from all the components on the cross section multilayers of (a) noncross-linked, (b) low cross-linked, (c) medium cross-linked, and (d) highly cross-linked films.