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    Giant Sequoia: an extraordinary case study involving Carbopol® gel

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    Name:
    Sequoia Solvent Gel.pdf
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    Description:
    Accepted/final draft post-refe ...
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    Authors
    McKibbin, C
    Allington-Jones, L cc
    Verveniotou, E
    Issue date
    2017-10-18
    Submitted date
    2018-04-19
    Subject Terms
    Polysaccharides
    agar
    gellan
    xanthan
    methyl celluloses
    Conservation
    Museum specimens
    
    Metadata
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    Abstract
    In 2016 a project was undertaken to stabilise and aestheticise the transverse section of giant sequoia on display at the Natural History Museum (NHM) in London, UK. This iconic specimen, which now dominates the top floor of the central hall, was 1300 years old when felled and has been part of the exhibitions for 122 years. Measuring over 4.5 metres in diameter, it posed many challenges during remedial conservation. The largest involved removal of the discoloured waxy substance and opacified shellac-based varnish that had been applied in the early 1980s. Solvent tests revealed that the coating was soluble in Industrial Methylated Spirits (IMS) and that the gel worked most effectively at a 1 hour application time. At longer durations the varnish itself gelled and the waxy component was re-deposited. The waxy substance was effectively removed by wiping with alternate white spirit and IMS swabs.
    Citation
    McKibbin, C., Allington-Jones, L., Verveniotou, E. ( Ocyober 2017)Giant Sequoia: an extraordinary case study involving Carbopol® gel. In: Solvent Gels in the Conservation of Art. Archtype PUblishing, p.172-176. ISBN: 9781909492509
    Publisher
    Archetype Publishing Ltd
    Journal
    Solvent Gels in the Conservation of Art
    URI
    http://hdl.handle.net/10141/622693
    Additional Links
    https://youtu.be/un2PLwNNEuM
    Type
    Conference Proceedings
    Item Description
    The attached file is the final accepted manuscript version of a presentation given at Gels in Conservation conference, London 16 - 18 October 2017. The link is to the video of the presentation and the published version is available in the printed proceedings. The photographs appear here by courtesy of the authors.
    xmlui.metadata.dc.identifier.isbn
    9781909492509
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