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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: J Biomater Sci Polym Ed. 2017 Feb 5;28(6):532–554. doi: 10.1080/09205063.2017.1286184

Figure 7.

Figure 7

Porosity of bilayer and gradient scaffolds compared to uniform PPF-HA scaffolds. Porosity data for PPF-HA scaffolds (with SDS, without SDS) taken from b. Data reported as mean + standard deviation (n = 4). Gradient descend scaffolds were printed with 10 wt% HA solution on bottom (descending order). Gradient ascend scaffolds were printed with 1.25 wt% HA solution on bottom (ascending order). Values with the same letter (A–C) are not statistically different (p ≥ 0.05).