Assessment of damage in old parchments by DSC and SEM

Gatta, Giuseppe; Badea, Elena; Ceccarelli, Raffaela; Усачева, Т. Р.; Mašić, A.; Coluccia, S.

doi:10.1007/s10973-005-6883-5

Cited by 3 publications

(5 citation statements)

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“…Evolving relaxation times report changes in the rigidity of the material and thus correlate with elasticity, crosslinking, chain scission, and loss of small molecules because of aging. For example, the conservation state of paper correlates with the NMR relaxation times, even during the very early stages of degradation . A measurement can also reveal the presence of conservation agents or material differences relating to restoration events, which are often undocumented.…”

Section: Objectsmentioning

confidence: 99%

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Cultural Heritage Studies with Mobile NMR

Rehorn

Blümich

2018

Angew Chem Int Ed

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Nuclear magnetic resonance (NMR) provides in situ information about selected isotope densities in samples and objects, while also providing contrast through rotational and translational molecular dynamics. These parameters are probed not only in NMR spectroscopy and imaging but also in nondestructive materials testing by mobile stray-field NMR, the unique properties of which are valuable in cultural heritage studies. We present recent progress in the analysis of cultural heritage with mobile H NMR stray-field sensors, for which the detection zone is outside of the NMR magnet. Prominent applications include the analysis of stratigraphies in paintings and frescoes, and the assessment of material states changing under the impact of aging, conservation, and restoration.

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Section: Objectsmentioning

confidence: 99%

“…Similar to human remains, parchment and leather are rich in hydrogen and amenable to investigation by stray‐field NMR. A study by Zhu et al.…”

Section: State Assessmentmentioning

confidence: 99%

Cultural Heritage Studies with Mobile NMR

Rehorn

Blümich

2018

Angew Chem Int Ed

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“…Geeignete, wasserstoffhaltige Objekte (Abbildung ) können hinsichtlich Wasserstoffgehalt, Rotations‐ und Translationsbewegungen charakterisiert werden. Änderungen der Relaxationszeiten sind auf Veränderungen der Steifigkeit des Materials zurückzuführen und korrelieren somit mit Elastizität, Vernetzungsdichte, Kettenspaltung von Makromolekülen und dem Verlust kleinerer Moleküle durch Alterungsprozesse . Der Konservierungsgrad von Papier korreliert beispielsweise schon im frühen Stadium der Alterung mit den Relaxationszeiten.…”

Section: Proben Und Objekteunclassified

“…Auch Pergament und Leder sind wasserstoffhaltige Substanzen, die großes Potenzial für Untersuchungen mit Streufeld‐NMR bieten. Eine Studie von Zhu et al.…”

Section: Zustandsbestimmungunclassified

Unilaterale NMR zur Untersuchung von Kunst und Kulturgut

Rehorn

Blümich

2018

Angewandte Chemie

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Die Kernspinresonanz ermöglicht In‐situ‐Bestimmungen der Isotopendichte in Proben und Objekten. Dabei erzeugen Relaxationsprozesse weiteren Kontrast, der nicht nur mit der NMR‐Spektroskopie oder der Magnetresonanztomographie, sondern auch über die der zerstörungsfreie Streufeldanalyse mit tragbaren 1H‐NMR‐Sensoren erfasst werden kann. Bei unilateralen NMR‐Sensoren liegt das Detektionsvolumen außerhalb des Gerätes, sodass mobile Sensoren mittlerweile auch für Untersuchungen von Kunst und Kulturgut genutzt werden. Die wichtigsten Anwendungen umfassen die Analyse von Schichtstrukturen in Gemälden und Fresken sowie die Verfolgung von alterungsinduzierten Veränderungen der Materialeigenschaften durch Alterung, Konservierungs‐ oder Restaurierungsmaßnahmen.

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“…These changes reflect the degradation extent and can be measured by simple methods (Vornicu et al, ). At microscopic level, fibers degradation is detected and measured by optical microscopy (OM) and scanning electron microscopy (SEM) (Badea et al, ; Della Gatta et al, ).…”

Section: Introductionmentioning

confidence: 99%

Analytical techniques used for the characterization and authentification of six ancient religious manuscripts (XVIII–XIX centuries)

Vornicu¹,

Deselnicu

Bibire³

et al. 2014

Microscopy Res & Technique

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This article presents the experimental results of a research on six manuscripts (three of the XVIII century and three of XIX century) belonging collection of old religious books to the Moldovan Metropolitan Church of Romania. Non-invasive techniques (optical microscopy [OM], scanning electron microscopy/energy dispersive X-ray system, X-ray fluorescence analysis, shrinkage temperature, and Fourier transform infrared spectroscopy/attentuated total reflectance) provided information on the degree of degradation and identification of the leather bookbinding type. Moreover, visual assessment and OM revealed the extent of the surface degradation (wane, biological attack, change color, etc.). The degradation extent of the skin bindings was determined on the 12 samples. The insight on the mechanism of degradation was accomplished by analyzing the deterioration of collagen fibers in terms of shrinkage temperature and chemical modifications induced by oxidative and hydrolytic processes. Shrinkage temperature values were lower compared with the literature data for collagen, indicating that the leather bookbinding suffered intrinsic damage. Morphological analysis was accomplished by microscopy and allowed the identification of skin type and provided information about its processing technique. Mineral elements were identified for leather composition and contributed to the information regarding the origin and the extent of degradation of the leather bookbinding, of the studied manuscripts. The analyzed results were useful in determining the state of preservation and were able to provide an increased efficiency of further restoration. The correlation of the obtained data brought new contributions to the knowledge of the leather covers for the book technique in the XVIII and XIX centuries in monastic workshops of Eastern Europe.

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Assessment of damage in old parchments by DSC and SEM

Cited by 3 publications

References 0 publications

Cultural Heritage Studies with Mobile NMR

Cultural Heritage Studies with Mobile NMR

Unilaterale NMR zur Untersuchung von Kunst und Kulturgut

Analytical techniques used for the characterization and authentification of six ancient religious manuscripts (XVIII–XIX centuries)

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