Notice catalographique « TPEN : a treatment for iron gall ink »
- Titre
- TPEN : a treatment for iron gall ink
- Auteur ou éditeur
- Cude, Alison
- Queen's University (Kingston, Ont.)
- Lieu de publication
- Kingston, Ont.
- Maison d'édition
- Queen's University
- Date de publication
- 2010
- Collation
- vii, 75 p. : ill. ; 29 cm.
- Résumé
- The objective of this project is to carry out a preliminary investigation into the potential use of the chelator TPEN to inhibit paper corrosion resulting from the use of iron gall ink. Iron gall ink was widely used for centuries for both written documents and fine art, but is known to corrode paper by two mechanisms: acid-hydrolysis and oxidation. Acids added to and produced in the ink cause acid-hydrolysis; oxidation reactions are caused by metal ions in the ink, specifically by copper and excess iron. To date, calcium phytate is the most widely researched treatment into iron gall ink corrosion, as it both chelates iron, and is an antioxidant. Whereas the efficacy of calcium phytate with regards to iron gall ink is limited because calcium phytate does not complex with copper, TPEN is an antioxidant and strong iron chelator that also chelates copper. As well, TPEN has a wider solubility range than calcium phytate. This project followed established research methodologies used to investigate the efficacy of calcium phytate in an effort to determine if TPEN could also be an effective potential conservation treatment for iron gall ink. To this end, samples of Whatman # 1 filter paper were inscribed with a “standard” iron gall ink (composed of tannic acid, ferrous sulphate, cupric sulphate and gum arabic) and pre-aged for three days. These samples were either left untreated, treated with calcium phytate and deacidified as per the standard calcium phytate treatment of iron gall ink, or treated by immersion in an aqueous solution of TPEN. As per established calcium phytate treatments, some of the TPEN treated samples were also deacidified with an aqueous solution of calcium carbonate. Treated and untreated samples were thermally aged in sealed tubes. Samples were comparatively analyzed for changes in mechanical strength via zero span tensile testing, acidity via cold-extraction pH testing, copper and iron concentration via atomic absorpfion spectroscopy, and optical properties using the CIE L*a*b* scale and colour photography.
- Notes
- Research Report (M.A.) -- Queen's University, 2010
- Langue
- English = Anglais
- Sujet
- Printing ink
- Paper - Conservation and restoration
- Paper - Deterioration - Testing - Evaluation
- Papier - Conservation et restauration
- Encre d'imprimerie
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- TP 949 C83
- Clé
- 16723
- Collection
- Catalogue