Résumé

The preservation state of parchment primarily depends on the structure of the collagen fibre network, which in turn is responsible for optical anisotropy, i.e. birefringence. Polarised light microscopy can therefore be used as a non-invasive technique that allows recording of birefringence distribution in the parchment, which directly relates to stress–strain distribution. Using samples from diverse sources (commercial parchment, parchment used by restorers for book binding, and parchment fabricated for the purpose of this study), we assessed the capability of polarised light microscopy for various diagnostics. We performed, for instance, identification of gelatinised regions, layered or fibrous regions in parchment cross section, qualitative analysis of parchment fat content (lipids), observation of stress-induced patterns resulting from tensile tests, and observation of water diffusion. These proof-of-principle experiments extend the capability of polarised light microscopy far beyond its common use and open the path to its deployment in conservation studies.

langue originaleAnglais
journalStudies in Conservation
Les DOIs
étatPublié - 1 janv. 2019

Empreinte digitale

Conservation
Parchment
Polarized Light Microscopy
Qualitative Analysis
Fat
State of Preservation
Cross Section
Fiber
Water
Experiment
Optical
Diagnostics
Lipids
Anisotropy
Collagen

Citer ceci

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title = "Use of Polarised Light Microscopy to Improve Conservation of Parchment",
abstract = "The preservation state of parchment primarily depends on the structure of the collagen fibre network, which in turn is responsible for optical anisotropy, i.e. birefringence. Polarised light microscopy can therefore be used as a non-invasive technique that allows recording of birefringence distribution in the parchment, which directly relates to stress–strain distribution. Using samples from diverse sources (commercial parchment, parchment used by restorers for book binding, and parchment fabricated for the purpose of this study), we assessed the capability of polarised light microscopy for various diagnostics. We performed, for instance, identification of gelatinised regions, layered or fibrous regions in parchment cross section, qualitative analysis of parchment fat content (lipids), observation of stress-induced patterns resulting from tensile tests, and observation of water diffusion. These proof-of-principle experiments extend the capability of polarised light microscopy far beyond its common use and open the path to its deployment in conservation studies.",
keywords = "accesible technology, conservation, lipids, mechanical stress, non-invasive, Parchment, polarised microscopy, water intake",
author = "Vladimir Vilde and Marc Fourneau and Catherine Charles and {Van Vlaender}, Daniel and Julie Bouhy and Yves Poumay and Olivier Deparis",
year = "2019",
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doi = "10.1080/00393630.2019.1579951",
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journal = "Studies in Conservation",
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AU - Vilde, Vladimir

AU - Fourneau, Marc

AU - Charles, Catherine

AU - Van Vlaender, Daniel

AU - Bouhy, Julie

AU - Poumay, Yves

AU - Deparis, Olivier

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The preservation state of parchment primarily depends on the structure of the collagen fibre network, which in turn is responsible for optical anisotropy, i.e. birefringence. Polarised light microscopy can therefore be used as a non-invasive technique that allows recording of birefringence distribution in the parchment, which directly relates to stress–strain distribution. Using samples from diverse sources (commercial parchment, parchment used by restorers for book binding, and parchment fabricated for the purpose of this study), we assessed the capability of polarised light microscopy for various diagnostics. We performed, for instance, identification of gelatinised regions, layered or fibrous regions in parchment cross section, qualitative analysis of parchment fat content (lipids), observation of stress-induced patterns resulting from tensile tests, and observation of water diffusion. These proof-of-principle experiments extend the capability of polarised light microscopy far beyond its common use and open the path to its deployment in conservation studies.

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KW - accesible technology

KW - conservation

KW - lipids

KW - mechanical stress

KW - non-invasive

KW - Parchment

KW - polarised microscopy

KW - water intake

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DO - 10.1080/00393630.2019.1579951

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JF - Studies in Conservation

SN - 0039-3630

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