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Table 5 Physical–mechanical properties of the wood joints glued with different tannin-based adhesives

From: Tannin-based extracts of Mimosa tenuiflora bark: features and prospecting as wood adhesives

Adhesive sample MC (%) Shear strength (MPa) Wood failure (%)
MT 7.03 ± 0.29 1.41 a ± 0.54 41.09 a ± 7.26
MT + NaOH 7.26 ± 0.23 1.51 a ± 0.73 44.13 a ± 3.44
MT + NaHSO3 7.43 ± 0.21 1.27 ab ± 0.53 40.70 a ± 4.55
IT 7.35 ± 0.23 0.76 b ± 0.37 35.11 b ± 6.03
F-ratio 3.36 5.36
p-value 0.0269 0.0033
n 48 48 45
  1. Where: MC is moisture content of the glued wood sample (dry basis). According to the Fisher-Snedecor test, averages (± standard deviations) followed by the same letter, in the same column, do not differ statistically from each.
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