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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