Ammonia Treatment of Acidic Vasa Wood
2009 (English)In: Proceedings 10th ICOM-CC WOAM Conference, Amsterdam 2007 / [ed] Per Hoffmann, Bremerhaven, 2009, 539-561 p.Conference paper (Other academic)
Outbreaks of acidic sulfate salts have been reported in numerous areas on the wooden surfaces of the Swedish historical shipwreck Vasa (from 1628) in the Vasa Museum. Effects of ammonia vapour treatment to reduce the acidity in Vasa wood, similar to that previously applied to the Dutch East Indiaman Batavia (from 1629), have been investigated by means of solid state 13C-NMR and MALDI-TOF spectrometry. No major changes were found in the molecular weight distribution of the bulking agent polyethylene glycol (PEG) or in the crystallinity of pulp cellulose after mild exposure to ammonia vapour. Further studies on the long-term pH stability and the post-treatment properties of the wood using spectroscopic methods and mechanical testing are in progress.
Place, publisher, year, edition, pages
Bremerhaven, 2009. 539-561 p.
, ICOM, Committee for Conservation, Working Group on Wet Organic Archaeological Materials, 10
Other Basic Medicine
Research subject Structural Chemistry
IdentifiersURN: urn:nbn:se:su:diva-25013ISBN: 978 90 5799 139-4OAI: oai:DiVA.org:su-25013DiVA: diva2:198719
10th ICOM-CC WOAM Conference
Part of urn:nbn:se:su:diva-76272008-05-132008-05-092010-01-15Bibliographically approved