Notice catalographique « Light bleaching of paper without aqueous immersion : assessing the possible damage »
- Titre
- Light bleaching of paper without aqueous immersion : assessing the possible damage
- Auteur ou éditeur
- Potapova, Katherine
- Lieu de publication
- Kingston, Ontario
- Maison d'édition
- Queen's University
- Date de publication
- 2013
- Collation
- vi, 69 p., 28 cm.
- Résumé
- Introduced into paper conservation practice in the 1970s, aqueous light bleaching is considered a safe and effective method of reducing discolouration on paper objects. The treatment necessitates immersing the object in a bath of water and exposing it to intense light for several hours. Clearly, it is only possible so to treat objects that can undergo prolonged immersion in water. The aim of this study was to investigate the feasibility of non-aqueous or non-immersion light bleaching of paper. Specifically, it was desired to establish whether significant damage was inflicted on the cellulose component of paper during these treatments. The scope of the study was restricted to the effects of the treatments on cellulose and cellulose deterioration products; effects on other substances that may be found in papers were not considered. Whatman no.1 filter paper, both new and that having undergone a short thermal aging period, was exposed to ultraviolet-filtered artificial light in three conditions: dry, humidified in a water vapour chamber, and immersed in a bath of deionised water. Damage to the paper resulting from the three treatments was assessed via three methods: the zero-span breaking strength test, viscometry analysis, and the cold extraction pH test. No change in the properties of cellulose as a result of light exposure was detected by these methods. A further study, using more thoroughly degraded paper, is recommended.
- Notes
- inc. tables
- Autres titres
- Light bleaching of paper without aqueous immersion...
- Langue
- English = Anglais
- Sujet
- Paper - Conservation and restoration
- Cellulose - Chemistry
- Papier - Conservation et restauration
- Cellulose - Chemie
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- QK 898.C42 P58
- Clé
- 17084
- Collection
- Catalogue