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Table II
Pearson’s correlation coefficients between chemical contents and vibrational and physical properties (mean per species, hardwoods).
| N = 25 | AB | W | AB+W | CPC | LPC | HCPC |
|---|---|---|---|---|---|---|
| E′/ρ | –0.2 | –0.4 | –0.3 | 0.2 | –0.3 | 0.0 |
| tanδ | –0.4 | 0.53 | –0.3 | –0.3 | 0.1 | 0.2 |
| E′′/ρ | –0.73 | 0.2 | –0.71 | –0.1 | –0.1 | 0.2 |
| Δtanδ | –0.72 | 0.4 | –0.66 | –0.2 | –0.1 | 0.2 |
| EMC | –0.65 | 0.2 | –0.63 | 0.1 | –0.1 | 0.2 |
| FSP | –0.66 | 0.1 | –0.64 | –0.2 | 0.1 | 0.2 |
| VSh | –0.57 | –0.3 | –0.64 | 0.0 | 0.3 | –0.2 |
| Δ VSh | –0.73 | 0.0 | –0.75 | 0.0 | 0.0 | 0.1 |
AB: ethanol-benzene and W: hot water, extractives content. CPC, LPC and HCPC: cellulose, lignin and hemicelluloses proportions. FSP: Fibre saturation point, VSh: Volumetric shrinkage.