Table 1 Characteristic parameters of collagen shrinking and rates of thermal oxidative degradation for untreated and treated historical samples
From: The effect of halloysite nanotubes dispersions on vegetable-tanned leather thermal stability
Sample | Hydrothermal stability (shrinking behavior) | Thermo-oxidation rate | |||
|---|---|---|---|---|---|
Standard method | MHT method | TG/DTG | |||
Ts (°C) | Tf (°C) | Ts (°C) | Tl (°C) | d %Δm/dt (min−1) | |
Untreated | 68 ± 1 | 36.2 ± 0.8 | 68.6 ± 1.2 | 86 ± 2.3 | 4.78 |
HNT-beeswax | 72 ± 2 | 42.4 ± 1.3 | 71.3 ± 2.8 | 84 ± 3.1 | 1.96 |
HNT-PEG | 74 ± 1 | 44.8 ± 1.0 | 73.7 ± 1.6 | 83 ± 1.9 | 3.54 |
HNT-BNUTO | 70 ± 1 | 45.1 ± 0.9 | 69.4 ± 1.5 | 82 ± 2.0 | 3.89 |