Preservation treatments of aged papers by supercritical carbon dioxide

Authors
Selli, E Lange, E Mossa, A Testa, G Seves, A
Citation
E. Selli et al., Preservation treatments of aged papers by supercritical carbon dioxide, MACRO MAT E, 280(7-8), 2000, pp. 71-75
Citations number
17
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR MATERIALS AND ENGINEERING
ISSN journal
14387492 → ACNP
Volume
280
Issue
7-8
Year of publication
2000
Pages
71 - 75
Database
ISI
SICI code
1438-7492(200008)280:7-8<71:PTOAPB>2.0.ZU;2-7
Abstract
Innovative neutralizing and strengthening treatments for aged acidic paper have been developed, based on the use of supercritical carbon dioxide (CO2S CF) as solvent system. After treatment with the non toxic neutralizing agen t CaCO3 in CO2SCF, acidic papers exhibited a pH increase of water extracts, the creation of an alkaline reserve and a decrease in the rate of artifici al aging, while mechanical tensile properties properties of aged acidic pap ers improved after treatment with catechol both simply dissolved in ethanol or in CO2SCF in the presence of ethanol as co-solvent.