Table 2. Summary of Skeletal ρs and Foam ρf Densities, Porosity P, Pore dp, and Pore Throat Diameter dpt of Homogeneous Macroporous Polymers (S1–S10) and Macroporous Polymers with Gradient Foam Density (G1), Pore Size (G2), and Composition (G3).
| ρs [g/cm3] | ρf [g/cm3] | P [%] | ρf [g/cm3] | dp [μm] | dpt [μm] | ||
|---|---|---|---|---|---|---|---|
| S1a | 1.05 ± 0.03 | 0.18 ± 0.01 | 83 ± 1 | 3.6 ± 2.3 | 1.2 ± 0.5 | ||
| S2a | 1.07 ± 0.02 | 0.23 ± 0.01 | 79 ± 1 | 5.1 ± 1.7 | 1.3 ± 0.5 | ||
| S3a | 1.06 ± 0.01 | 0.34 ± 0.01 | 68 ± 1 | 5.2 ± 2.3 | 1.3 ± 0.5 | ||
| S4a | 1.07 ± 0.01 | 0.40 ± 0.02 | 62 ± 2 | 5.5 ± 2.7 | 2.4 ± 1.2 | ||
| S5 | 1.07 ± 0.01 | 0.19 ± 0.01 | 82 ± 1 | 2.2 ± 1.1 | 0.8 ± 0.3 | ||
| S6 | 1.07 ± 0.01 | 0.18 ± 0.02 | 84 ± 1 | 2.6 ± 1.5 | 1.0 ± 0.4 | ||
| S7 | 1.07 ± 0.01 | 0.15 ± 0.01 | 86 ± 1 | 6.6 ± 8.6 | 1.6 ± 0.9 | ||
| S8 | 1.14 ± 0.01 | 0.19 ± 0.01 | 83 ± 1 | 3.4 ± 1.1 | 1.0 ± 0.2 | ||
| S9 | 1.16 ± 0.01 | 0.21 ± 0.01 | 82 ± 1 | 3.5 ± 1.5 | 1.1 ± 0.3 | ||
| S10 | 1.01 ± 0.01 | 0.24 ± 0.02 | 77 ± 1 | 3.8 ± 2.4 | 0.9 ± 0.6 | ||
| G1a | 1.07 ± 0.02 | 0.30 ± 0.01 | 72 ± 1 | G1-L1 (S1)a | 0.20 ± 0.01 | 4.2 ± 1.7 | 1.2 ± 0.5 |
| G1-L2 (S2) | 0.23 ± 0.01 | 4.3 ± 2.6 | 1.1 ± 0.5 | ||||
| G1-L3 (S3) | 0.33 ± 0.01 | 3.8 ± 1.7 | 1.3 ± 0.6 | ||||
| G1-L4 (S4) | 0.38 ± 0.01 | 4.2 ± 2.1 | 1.2 ± 0.5 | ||||
| G2 | 1.07 ± 0.01 | 0.18 ± 0.01 | 85 ± 1 | G2-L1 (S5) | 0.19 ± 0.01 | 2.4 ± 0.9 | 0.7 ± 0.3 |
| G2-L2 (S6) | 0.19 ± 0.01 | 2.8 ± 1.2 | 1.0 ± 0.4 | ||||
| G2-L3 (S1) | 0.19 ± 0.01 | 5.4 ± 2.5 | 1.3 ± 0.6 | ||||
| G2-L4 (S7) | 0.14 ± 0.01 | 7.5 ± 6.2 | 1.9 ± 1.0 | ||||
| G3 | 1.13 ± 0.01 | 0.19 ± 0.01 | 83 ± 1 | G3-L1 (S10) | 0.23 ± 0.01 | 6.7 ± 1.6 | 1.4 ± 0.4 |
| G3-L2 (S9) | 0.20 ± 0.01 | 4.4 ± 1.3 | 0.9 ± 0.3 | ||||
| G3-L3 (S8) | 0.19 ± 0.01 | 4.6 ± 1.0 | 0.8 ± 0.3 | ||||
| G3-L4 (S1) | 0.17 ± 0.01 | 5.7 ± 1.2 | 1.4 ± 0.5 |
a
The sample ID in the brackets refers to the corresponding controls of the layer in gradient macroporous polymers.