Table 2.
Summary of key properties of the foams.
| Sample ID |
Density Top (g cm−3) |
Density Middle (g cm−3) |
Density Bottom (g cm−3) |
Gel fraction (%) a |
Tg (DSC) (°C) |
G’glassy at Tδs−20 °C) (kPa) a |
G’rubbery at Tδs+20 °C (kPa) a |
Tonset (°C)a |
Tδs (°C)a |
ΔT (°C)a |
Tan δ (Peak value) a |
Volume expansion |
% shape recovery after hold for 2 hrs at Tg+60 °C (%) a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| H80 | .017 | .018 | .026 | 98 ±1 | 69 | 223±18 | 10±2 | 64±2 | 76±1 | 24±6 | 0.8±0.1 | 71 | 65±7 |
| H60 | .021 | .021 | .022 | 96±2 | 61 | 255±49 | 11±3 | 55±1 | 71±1 | 31±1 | 0.9±0.1 | 68 | 95±2 |
| H40 | .015 | .015 | .017 | 96±2 | 57 | 212±63 | 6±2 | 49±1 | 64±1 | 31±7 | 0.8±0.1 | 71 | 94±1 |
| H20 | .018 | .020 | - | 97±1 | 47 | 235±25 | 8±1 | 40±0 | 57±1 | 32±3 | 0.9±0 | 68 | 94±1 |
| H0 | .023 | .019 | .021 | - | 44 | 259±29 | 11±1 | 37±0 | 52±1 | 31±1 | 0.7±0.1 | 62 | 99±1 |
a
mean ± error (n=3)