Table 1 Foam samples parameters: sample name, density, density absolute error, volumetric fraction of the polymer.

From: Foam density mapping via THz imaging

Samples

Name

C1

C2

C3

C4

C5

C6

C7 (neat)

T1

T2

T3

T4

T5

T6

\(\rho _f\) [kg/m3]

71.6

95.5

112.5

118.0

149.7

181.2

902.5

80.9

112.7

177.4

300.7

383.6

532.7

\(|\delta _{\rho _f}|\) [kg/m3]

0.2

0.2

0.2

0.2

0.3

0.3

3.1

0.4

0.3

0.3

0.5

0.5

0.6

\(\chi _p\) [−]

0.0781

0.1046

0.1235

0.1295

0.1684

0.200

1

0.0885

0.1238

0.196

0.332

0.424

0.590

\(|\delta _{\chi _p}|\) [−]

0.0004

0.0006

0.0007

0.0007

0.0008

0.001

0.0007

0.0007

0.001

0.002

0.002

0.003