Abstract
The preservation of cultural heritage is of great importance worldwide and, as such, has been the focus of an increasing number of research projects in recent years. In spite of considerable efforts around the world, significant problems have arisen with the conservation of many shipwrecks. The most common issues facing conservators are structural instability upon drying and biological degradation stemming from the aquatic flora and fauna active around the excavation site. However, many important artefacts – such as the sixteenth century warship Mary Rose – also suffer from metal ion saturation from degraded bolts and fittings. In most cases Fe3+ is the greatest problem, which catalyses the production of sulfuric and oxalic acid in the waterlogged timbers, adding chemical degradation to the potential conservation issues. Moreover, the Fe3+ also feeds biological degradation by providing bacteria with an iron source for sustained growth. As such, multi-functional consolidants are greatly needed to tackle not only the many-pronged conservation issues already visible, but also to prevent others from evolving over time. This paper discusses the recent successes in the development of such materials from sustainable, bio-based sources and some potential areas for the future development of these tools.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Bjordal, C.G., T. Nilsson, G. Daniel. 1999. Microbial decay of waterlogged archaeological wood found in Sweden applicable to archaeology and conservation. Int. Biodeterior. Biodegrad. 43, 63–73.
Sandstrom, M., F. Jalilehvand, I. Persson, U. Gelius, P. Frank, I. Hall-Roth, I. 2002. Deterioration of the seventeenth-century warship Vasa by internal formation of sulphuric acid. Nature 415, 893–897.
Fors, Y. and M. Sandstrom. 2006. Sulfur and iron in shipwrecks cause conservation concerns. Chem. Soc. Rev. 35, 399–415.
Almkvist, G. and I. Persson. 2008. Fenton-induced degradation of polyethylene glycol and oak holocellulose. A model experiment in comparison to changes observed in conserved waterlogged wood. Holzforschung 62, 704–708.
Almkvist, G. and I. Persson. 2008. Analysis of acids and degradation products related to iron and sulfur in the Swedish warship Vasa. Holzforschung, 62, 694–703.
May, E. and M. Jones. 2008 Molecular Bacterial Diversity in the Timbers of the Tudor Warship the Mary Rose. 204–218 In: eds May, E. and M. Jones. Heritage Microbiology and Science: Microbes, Monuments and Maritime Materials. Cambridge: Royal Society of Chemistry.
Bjurhager, I., H. Halonen, E.L. Lindfors, T. Iversen, G. Almkvist, E.K. Gamstedt and L.A. Berglund. 2012. State of degradation in archaeological oak from the 17th century Vasa ship: Substantial strength loss correlates with reduction in holo(cellulose) molecular weight. Biomacromol. 13, 2521–2527
Braovac, S. and H. Kutzke. 2012. The presence of sulfuric acid in alum-conserved wood – Origin and consequences. J. Cult. Herit. 13, S203–S208.
Gray, F. M. 1997. Polymer Electrolytes. RSC Materials Monographs. Cambridge: Royal Society of Chemistry.
Almkvist, G and I. Persson, I. 2008c. Degradation of polyethylene glycol and hemicellulose in the Vasa. Holzforschung 62, 64–70.
Mortensen, M.N., H. Egsgaard, S. Hvilsted, Y. Shashoua, and J. Glastrup. 2007. Characterisation of the polyethylene glycol impregnation of the Swedish warship Vasa and one of the Danish Skuldev Viking ships. J. Archaeol. Sci. 34, 1211–1218.
Berko, A., A.D. Smith, A M. Jones, E.J. Schofield, J.F.W. Mosselmans and A.V. Chadwick. 2009. XAS studies of the effectiveness of iron chelating treatments of Mary Rose timbers. J. Phys. Conf. Ser. 190, 012147.
Bardet, M., G. Gerbaud, Q.-K. Trân, and S. Hediger. 2007. Study of interaction between polyethylene glycol and archaeological wood components by C-13 high-resolution solid-state CP-MAS NMR. J. Archaeol. Sci. 34, 1670–1676.
Bardet, M., G. Gerbaud, C. Doan, M. Giffard, S. Hediger, G. De Paepe, and Q.-K. Trân. 2012. Dynamics property recovery of archaeological-wood fibers treated with polyethylene glycol demonstrated by high-resolution solid-state NMR. Cellulose 19, 1537–1545.
Cipriani, G., A. Salvini, P. Baglioni, and E. Bucciarelli. 2010. Cellulose as a renewable resource for the synthesis of wood consolidants. J. Appl. Polym. Sci. 118, 2939–2950.
Christensen, M., H. Kutzke and F.K. Hansen. 2012. New materials used for the consolidation of archaeological wood – past attempts, present struggles, and future requirements. J. Cult. Herit. 13, S183–S190.
Walsh, Z., E.R. Janeček, M. Jones and O.A. Scherman. 2017. Natural polymers as alternative consolidants for the preservation of waterlogged archaeological wood. Stud. Conservat. 62, 173–183.
Walsh, Z., E.R. Janeček, J.T. Hodgkinson, J. Sedlmair, A. Koutsioubas, D.R. Spring, M. Welch, C.J. Hirschmugl, C. Toprakcioglu, M. Jones, J.R. Nitschke, and O.A. Scherman. 2014. Supramolecular polymer networks as next generation consolidants for archaeological wood conservation. Proc. Nat. Acad. Sci. USA 111, 17743–17748.
Raafat, D., K.von Bargen, A. Haas, and H.-G. Sahl. 2008. Insights into the mode of action of chitosan as an antibacterial compound. Appl. Environ. Microbiol. 74, 3764–3773.
Christensen, M., E. Larnøy, H. Kutzke and F.K. Hansen. 2015. Treatment of waterlogged archaeological wood using chitosan- and modified chitosan solutions. Part 1: Chemical compatibility and microstructure. J. Am. Inst. Conservat. 54, 3–13.
Lechner, T., I. Bjurhager, R.I. Kliger. 2013. Strategy for developing a future support system for the Vasa warship and evaluating its mechanical properties. Herit. Sci., 1, 35–45
Acknowledgements
The research leading to these results has received funding from the People Programme (Marie Curie Actions) of the European Union’s 7th Framework Programme (FP7/2007-2013) under REA grant agreement n. PCOFUND-GA-2013-609102, through the PRESTIGE programme coordinated by Campus France, awarded to ZWK (PRESTIGE-2016-2-0008). ZWK acknowledges the help of Drs J.T. Hodgkinson, M. Welch, J. Sedlmair, A. Koutsioubas, and Profs. D.R. Spring, C.J. Hirschmugl, C. Toprakcioglu, A. Dent and J.R. Nitschke in the characterisation and development of these materials. ZWK and OAS acknowledge financial support from the Mary Rose Trust, the Engineering and Physical Sciences Research Council (EPSRC) UK and the European Research Council (ERC) (Starting Investigator Award No. 240619, ASPiRe). OAS also acknowledges the Walters-Kundert Charitable Trust for a Next Generation Fellowship. ERJ thanks the EPSRC for a doctoral training grant.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this chapter
Cite this chapter
Walsh-Korb, Z., Janeček, ER., Jones, M., Averous, L., Scherman, O.A. (2019). New Consolidants for the Conservation of Archeological Wood. In: Nevin, A., Sawicki, M. (eds) Heritage Wood. Cultural Heritage Science. Springer, Cham. https://doi.org/10.1007/978-3-030-11054-3_3
Download citation
DOI: https://doi.org/10.1007/978-3-030-11054-3_3
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-11053-6
Online ISBN: 978-3-030-11054-3
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)