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Table 4 Averages and standard deviations for the solid contents, viscosity, and potential hydrogens with (pHc) and without (pHnc) catalyst and gel time for the tannin-based adhesives

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

Adhesive (sample) SC (%) Viscosity (cP) pHnc pHc Gel time (s)
MT 53.47 ± 0.68 5233 ± 57 4.21 ± 0.04 4.01 ± 0.02 75 ± 2.65
MT + NaOH 28.57 ± 0.36 10,333 ± 305 7.63 ± 0.03 7.34 ± 0.03 88 ± 2.65
MT + NaHSO3 53.49 ± 1.24 4233 ± 57 5.25 ± 0.02 4.84 ± 0.01 101 ± 4.36
IT 52.22 ± 0.73 2013 ± 128 4.82 ± 0.03 4.62 ± 0.02 126 ± 6.56
  1. where: numerals refer to averages ± standard deviations
  2. SC solids content, pHnc hydrogen potential without using the catalyst agent, pHc hydrogen potential using the catalyst agent
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