Belhadj, Oulfa

Cauliez, Neilly

Duranton, Maroussia

Joly, Olivier

Rouchon, Veronique

Vinther Hansen, Birgit

Walbert, Charlotte

Current treatments proposed to limit iron gall ink damages require theimmersion of the document in aqueous anti-oxidant solutions, and thuspresent undesirable side effects. This work deals with the possibility ofreplacing these treatments by interleaving treatments performed withanti-oxidant charged papers. Interleaving treatment consists in pressingthe document between two interleaves, at ambient temperature and inhigh humidity conditions in order to provoke the migration of activecomponents from the interleaves to the document. The use of high humidityconditions may provoke a migration of ink components from the inkline to the paper which is prejudicial to the future conservation of thedocument. Tests, performed on a set of 53 original manuscripts, led usconsider that a relative humidity of 80% was minimizing this risk. The efficiencyof interleaving treatment was then evaluated on laboratorysamples made of Whatman paper impregnated with iron gall ink. Interleavescharged with halide salts (NaCl, NaBr, CaCl2, CaBr2) and/orcalcium carbonate were investigated. An alkaline reserve of 2% calciumcarbonate in the interleaves does not impact the treatment efficiency,which is mainly dependant upon the concentration of anti-oxidant, thepressure and the duration of the treatment

Ministry of Culture Research Portal

French

Conservation de manuscrits altérés par les encres ferrogalliques:faisabilité d’un traitement antioxydant par contact en milieu humide

Conservation de manuscrits altérés par les encres ferrogalliques:faisabilité d’un traitement antioxydant par contact en milieu humide

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