Official Journal of the Japan Wood Research Society
Table 4 Selectivity and effectiveness of Psa and ozone treatment
Psa dosage (%) | Selectivity (∆kappa number/∆viscosity) | Effectiveness (∆kappa number/1.0 % chemical used) | ||
|---|---|---|---|---|
Psa treated | Psa-Za bleached | Psa treated | Psa-Za bleached | |
0.0 | – | 0.21 | – | 5.2 |
0.1 | 0.36 | 0.12 | 24.0 | 1.8 |
0.2 | 0.31 | 0.03 | 17.0 | 0.2 |
0.4 | 0.25 | 0.00 | 9.0 | 0.0 |
0.6 | 0.25 | 0.00 | 6.2 | 0.0 |