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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 Termite and decay resistance of sweet sorghum bagasse particleboard bonded with citric acid, PF, and pMDI

From: Utilization of sweet sorghum bagasse and citric acid for manufacturing of particleboard II: influences of pressing temperature and time on particleboard properties

Biological-durability testing

Specimen type

CA

PF

pMDI

Control

 Termite resistance

  Termite mortality (%)

42.8 (4.1)

46.4 (9.4)

37.9 (2.1)

24.73 (5.84)

  Mass loss (%)

5.9 (0.36)

3.92 (0.28)

5.91 (0.9)

13.57 (2.35)

 Decay resistance

  Mass loss of the specimen expose to

   Brown-rot fungus (%)

5.34 (1.36)

5.79 (2.83)

4.54 (0.63)

10.23 (4.77)

   White-rot fungus (%)

21.63 (11.72)

9.09 (0.78)

31.02 (5.41)

37.49 (6.05)

  1. Values in parentheses are standard deviation
  2. Citric acid (CA) is particleboard bonded with 20 wt% citric acid content in optimum of pressing temperature (200 °C) and time (10 min); phenol formaldehyde (PF) is particleboard bonded with 12 wt% PF resin with the pressing condition of 200 °C for 6 min; polymeric 4,4′-methylenediphenyl isocyanate (pMDI) is particleboard bonded with 8 wt% pMDI with the pressing condition of 180 °C for 8 min; control is sugi (Cryptomeria japonica) wood specimen
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