Research Article

Fabrication and Characterization of Alveolus-Like Scaffolds with Control of the Pore Architecture and Gas Permeability

Figure 4

Images of gelatin microspheres packed moulds and formed scaffolds. Multilayered hexagonally packed gelatin microspheres (a) (A1, A2) and PU-IOS scaffolds (b) (B1, B2) from bright field microscopy. (c) (C1, C2) The formed PU scaffold observed by SEM. Arrows showed the smaller pores within big pores, which were created through connected gelatin microspheres.
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