Table 1 Characterization of pH and alkaline reserve of cotton canvas (AA) before and after deacidification with polar and nonpolar deacidification agents
From: New treatments for canvas consolidation and conservation
Treatment of cotton canvas (AA) | Surface pH according to TAPPI T 529 om-04 | pH as cold extract according to ISO 6588-1 | Alkaline reserve according to ISO 10716 (mol/kg) |
|---|---|---|---|
Untreated | 4.3 | 5.8 | − 0.01 |
Deacidified with MgO | 9.1 | 7.9 | 0.13 |
Deacidified with CaCO3 | 8.7 | 8.4 | 0.16 |