Notice catalographique « Borane tert-butylamine complex : ageing properties of residual materials left in treated paper objects »
- Titre
- Borane tert-butylamine complex : ageing properties of residual materials left in treated paper objects
- Auteur ou éditeur
- Dion, Vincent
- Queen's University (Kingston, Ont.)
- Lieu de publication
- Kingston, Ont.
- Maison d'édition
- Queen's University
- Date de publication
- 2016
- Collation
- 33 p., bound
- Résumé
- "Paper-based objects degrade following two major mechanisms: acid-catalyzed hydrolysis and oxidation of the cellulosic structure, with both processes contributing to embrittlement and yellowing. Oxidation has not received the same attention in conservation research resulting in fewer treatment solutions to prevent and remediate it.
- Recent studies have pointed to the borane tert-butylamine complex as a promising reagent for the stabilization of cellulose due to its ability to selectively reduce carbonyl groups formed during oxidation back to original hydroxyl groups. A resulting effect of this stabilization is a brightening of the object suggesting it is also a suitable agent for mild and controlled bleaching, a procedure that has fallen out of favour in conservation due to the damaging effects of previous agents used. While the complex has since informally entered the paper conservator’s toolbox, especially due to its compatibility in rigid gellan gum gel for use on fragile objects, the conservation literature lacks an agreed upon range of working concentrations and a set of directives for carrying out different steps of the treatment.
- The project determines the long-term effects and potential toxicity of reaction products and residual reagent remaining in paper samples treated with the borane tert-butylamine complex. Accelerated ageing approximating long-term storage conditions is performed on rinsed and unrinsed samples treated with different concentrations of the reagent and changes are monitored using colorimetry based on the CIE L*a*b* colour space, TAPPI T 509 pH measurements, Fourier transform infrared spectroscopy and zero span tensile strength testing. The author reports on whether the rinsing step is required after treatment, a procedure many fragile objects are unable to withstand, potentially making the complex a possible treatment for a range of situations where options are limited. This work provides information needed by conservators to use the reagent with safety for the object and themselves."
- Notes
- Research Report (M.A.) - Queen's University, 2016
- Langue
- English = Anglais
- Sujet
- Paper - Treatment
- Paper - Deterioration
- Paper - Conservation and restoration
- Papier - Conservation et restauration
- Papier - Détérioration
- Papier - Traitement
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- TS 1109 V56 2016
- Clé
- 17998
- Collection
- Catalogue