Notice catalographique « Air pollution and paper deterioration : causes and remedies »
- Titre
- Air pollution and paper deterioration : causes and remedies
- Auteur ou éditeur
- Anna Johansson
- Lieu de publication
- Göteborg,Sweden
- Maison d'édition
- Göteborg University
- Date de publication
- 2000
- Collation
- 74 p., ill. (black & white) ; 24.5 cm.
- Résumé
- The objectives of the work described in this thesis have been to determine effects, especially synergistic effects, of air pollutants (SO 2, NO 2and 03) and climate on the stability of cellulose materials, in particular paper used and stored in archives and libraries. To reach these objectives, a number of paper grades were selected and reference papers were manufactured. The role of trace amounts of SO 2, NO 2and 03 on the degradation processes of paper was investigated using on-line gas analysis and in situ Diffuse Reflectance Infrared Fourier Transform spectrometry (DRIFT) and different reaction product characterisation techniques. Five mass deacidiflcation processes were evaluated with respect to their capability to provide protection against further acidification of papers. These processes were the DEZ (DiEthyiZinc) gas phase process and the solvent-based processes Battelle based on magnesium titanium ethoxide, Bookkeeper based on MgO, FMC based on magnesium dibutoxytriethylene glycolate, Wei T’o based on methoxy magnesium methyl carbonate and, the Sable process, which is a modified version of the Wei To process and uses a mixture of carbonated magnesium methoxide and ethoxide. It was concluded that the relative humidity plays an important role in the uptake of air pollutants. Both N2O and 03 were found to increase the uptake of S2O on paper. The addition of 03 increased the S2O uptake both at 50 and at 85% relative humidity, whereas N2O was only active at the higher humidity. The results show that the deacidification processes protect paper against the attack of acid air pollutants, although there are some quantitative differences. However, it was also shown that the alkali reserve per se does not provide an adequate protection from oxidants on paper. This dissertation emphasises the importance of setting m%itenance plans implementing preventive measures of improving the air quality in repositories in order to secure our written cultural heritage.
- Notes
- Thesis for the degree of doctor of philosophy
- Langue
- English = Anglais
- Sujet
- Air - Pollution
- Paper - Conservation and preservation
- Paper - Deterioration
- Air- Pollution
- Papier - Conservation et preservation
- Papier - Détérioration
- ISBN/ISSN
- 9162841688
- Pays
- Sweden
- Type de document
- Monograph = Monographie
- Localisation
- TS 1109 J64
- Clé
- 17164
- Collection
- Catalogue