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. 2020 Feb 12;12(2):422. doi: 10.3390/polym12020422

Table 2.

Measured basic construction parameters of samples.

Sample Code Areal Density (g/m2) Thickness (mm) Firmness Factor (%) Bulk Porosity (%) Surface Porosity (%) Hydraulic Head (μm)
S1 168.73 0.55 84.56 0.8058 0.98 146.90
S2 170.50 0.68 83.26 0.8413 1.65 157.16
S3 166.75 0.67 81.95 0.8425 2.21 167.58
S4 172.58 0.69 84.11 0.8417 1.33 150.35
S5 176.67 1.01 86.26 0.8893 2.49 133.70
S6 171.58 1.04 85.45 0.8956 4.24 139.90
S7 160.42 1.08 85.30 0.9041 4.31 141.37
S8 163.58 1.25 84.38 0.9188 7.07 148.26