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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.