Notice catalographique « The evaluation of modified laponite solvent-gel as a poultice in paper conservation »
- Titre
- The evaluation of modified laponite solvent-gel as a poultice in paper conservation
- Auteur ou éditeur
- Tong, Dorcas
- Lieu de publication
- Kingston, Ontario
- Maison d'édition
- Queen's University
- Date de publication
- 2013
- Collation
- vii, 83 p., ill., 28 cm.
- Résumé
- Laponite RD is a type of synthetic silicate that forms a clear, colloidal gel when hydrated in water. The working properties of Laponite are dependent on the formulation of the gel, which can be modified with the addition of solvents and additives. The focus of this study was how the introduction of additives into a Laponite-acetone gel will affect its efficacy as a poulticing material. The thickening agents, either xanthan gum or sodium carboxymethyl cellulose (CMC), were added into the Laponite solvent-gel to minimize the lateral movement of the poultice in an effort to limit the development of tide lines. The solvent-gel was evaluated based on the degree of residual deposition and, by association, signs of discolouration that remained on the paper surface after treatment. Lens tissue, Japanese gampi silk tissue and heavy silk rayon sheet were tested to determine which material would best serve as a barrier layer in reducing Laponite residues. Paper substrates were treated with the solvent-gel and were artificially aged in order to investigate the potential long-term effects of residues on the stability of paper. The Laponite-acetone gel was applied to artificially aged samples of masking tape to illustrate the effectiveness of the poultice on modern adhesive tapes. Analytical techniques such as Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy energy dispersive spectroscopy (SEM-EDS) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) were used for the identification and quantification of Laponite trace residues. Visual observations in the form of colorimetry and long ultraviolet light (UVA)-induced visible fluorescence demonstrated that Fabriano paper was less likely to retain poultice residues, and the addition of additives did not appeared to reduce the lateral movement of the poultice. The gampi silk tissue was the most effective in minimizing the deposition of residues, whereas the lens tissue performed poorly as a
- barrier layer.
- Notes
- inc. tables
- Autres titres
- The evaluation of modified laponite solvent-gel...
- Langue
- English = Anglais
- Sujet
- Paper - Conservation and restoration
- Solvents
- Spectroscopy
- Papier - Conservation et restauration
- Solvants
- Spectroscopie
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- QD 544 T66
- Clé
- 17135
- Collection
- Catalogue