Table 5 Shrinkage intervals—mean values of interval starting temperatures (°C)
From: Model study of the leather degradation by oxidation and hydrolysis
Hydrolysable | Condensed | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
A1 | B1 | C | B2 | A2 | Tlast | A1 | B1 | C | B2 | A2 | Tlast | |
Ref | 61.5 ± 4.3 | 63.6 ± 4.0 | 67.3 ± 5.4 | 74.3 ± 6.6 | 76.7 ± 5.0 | 79.1 ± 6.0 | 79.3 ± 0.2 | 81.3 ± 0.6 | 85.0 ± 2.2 | 93.6 ± 4.2 | 95.7 ± 4.3 | 96.7 ± 3.4 |
Xe | 36.6 ± 3.2 | 53.4 ± 3.8 | 60.9 ± 9.4 | 72.2 ± 16.5 | 74.0 ± 15.2 | 77.9 ± 12.3 | 70.3 ± 6.2 | 73.5 ± 5.3 | 82.1 ± 6.0 | 89.3 ± 6.3 | 91.8 ± 6.1 | 92.9 ± 7.1 |
H2O2-a | 63.5 ± 3.9 | 66.8 ± 2.4 | 69.8 ± 2.9 | 71.6 ± 4.5 | 79.5 ± 5.2 | 81.1 ± 5.4 | 68.5 ± 2.6 | 70.5 ± 2.2 | 74.8 ± 0.4 | 81.2 ± 1.2 | 83.0 ± 1.0 | 84.1 ± 0.9 |
H2O2-b | 40.3 ± 1.2 | 43.5 ± 0.3 | 47.5 ± 1.0 | 52.9 ± 1.5 | 54.3 ± 1.7 | 57.0 ± 0.4 | ||||||
HCl | 47.9 ± 4.0 | 51.9 ± 5.9 | 54.1 ± 5.5 | 58.1 ± 4.6 | 60.9 ± 2.7 | 50.3 ± 1.6 | 52.1 ± 2.4 | 53.4 ± 2.3 | 58.4 ± 0.4 | 61.8 ± 1.2 | 63.9 ± 1.1 | |