Raman and infrared spectroscopy in conservation and restoration

Rousaki, Anastasia; Vandenabeele, Peter

doi:10.1016/b978-0-12-818860-6.00004-0

Cited by 3 publications

(3 citation statements)

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“…Currently, FTIR and Raman spectroscopy are probably the most frequently used molecular techniques in the study of cultural heritage objects. Since the mid-1960s, when the first applications of infrared spectroscopy on cultural heritage artifacts were published [44], followed by the first Raman applications in the 1980s [45], there has been a remarkable surge in the utilization of both these techniques. Besides their clear analytical advantages (the characterization of a wide range of organic and inorganic compounds, alone or in mixtures, with little or no sample preparation), this growth has been propelled significantly by advancements in instrumentation, which have facilitated more refined and comprehensive analyses, including those in situ [21,23,[46][47][48][49].…”

Section: Spectral Data and Experimental Designmentioning

confidence: 99%

Towards FAIR Data Management in Heritage Science Research: Updates and Progress on the INFRA-ART Spectral Library

Cortea

2024

Heritage

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The heritage science sector is facing a critical need for accessible and comprehensive data resources to facilitate research, preservation efforts, and interdisciplinary collaboration. The concept of FAIR data management involves embracing principles and practices that ensure that data are Findable, Accessible, Interoperable, and Reusable. This work presents an overview of the latest updates on the INFRA-ART Spectral Library, an open access spectral database of cultural-heritage-related materials that was designed as a digital support tool for heritage research specialists that work with (portable) non- or minimally invasive spectroscopic techniques such as X-ray fluorescence (XRF), attenuated total reflectance–Fourier transform infrared (ATR-FTIR) spectroscopy, or Raman spectroscopy, among others. The database is an ongoing compilation of high-quality curated data that currently incorporates primary ATR-FTIR and XRF spectra and a preliminary dataset of Raman and short-wave infrared (SWIR) reflectance spectra on over 900 different materials typically found in painted works of art. For increased and sustainable accessibility, the database follows the European Commission’s recommendations on access to scientific information, as well as the FAIR guiding principles on research data that result from publicly funded research. The INFRA-ART Spectral Library is registered as a resource within the Open Science Cloud (EOSC) Portal and is among the services offered by the Romanian hub within E-RIHS (European Research Infrastructure for Heritage Science) DIGILAB.

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Section: Spectral Data and Experimental Designmentioning

confidence: 99%

Towards FAIR Data Management in Heritage Science Research: Updates and Progress on the INFRA-ART Spectral Library

Cortea

2024

Heritage

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“…Furthermore, the technique is portable and relatively quick (<10 min) [18][19][20][21][22]. RS is generally successful when analyzing plastics, and others have described the advantages and disadvantages of RS in more detail [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Non-Destructive Identification and Characterization of Crystopal, A Novel Mid-Twentieth Century Plastic

2023

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Crystopal is a mechanically strong yet highly decorative plastic with a translucent and crackled appearance that was produced in the 1960s by the artist and plastics engineer Armand G. Winfield (1919–2009) and his company, Crystopal, Ltd. Many of Winfield’s collected plastic objects are housed within the Syracuse University Libraries, but some lack complete archival descriptions, including plastic compositions. To address this, the non-invasive and non-destructive determination of the polymer identities in Winfield’s artifacts was performed by Raman spectroscopy. Our studies generally begin with the database matching of an artifact spectrum to that of a polymer standard, but when objects known to be fabricated from Crystopal were analyzed, a database of over 100 representative polymers failed to yield the chemical identity of the plastic. However, the Raman spectrum of Crystopal displayed a unique chemical fingerprint that revealed it to be composed of an unsaturated polyester crosslinked with styrene. This Raman spectrum was added to the database and used as reference for the unambiguous identification of Crystopal artifacts, distinguishing them from decorative plastics with similar appearances. The addition of Crystopal to the polymer database provides a pathway toward establishing artifact provenance and preserving objects crafted from this unique and decorative plastic.

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“…In contrast, vibrational spectroscopy provides decisive identification of unknown plastics via chemical fingerprinting [6]. Commonly used types of vibrational spectroscopy include attenuated total reflectance (ATR) infrared, external reflectance (ER) infrared, and Raman techniques, each having its own advantages and disadvantages [13,14]. For example, while infrared spectroscopies are not subject to interference by fluorescence (unlike Raman spectroscopy), ATR spectroscopy requires samples with smooth flat surfaces and close contact with the instrument.…”

Section: Introductionmentioning

confidence: 99%

Determination of the polymer composition of mid-twentieth century purses by Raman spectroscopy

et al. 2022

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A database was constructed of 134 reference plastic samples and their Raman spectra to aid in the rapid and accurate identification of the polymer composition of mid-twentieth century plastic purses and their component parts from the Plastics Artifacts Collection at Syracuse University Libraries. Work began by making and testing the database, which led to the determination that matching artifact spectra to reference sample spectra worked well for artifact spectra having signal-to-noise ratios down to 30:1. This finding allowed for using reduced laser power as necessary to protect delicate and pigmented artifacts. These studies enabled the definitive chemical identification of seven selected artifacts, showing that the majority are composed of single plastics including polystyrene, poly(methyl methacrylate), or cellulose acetate. However, it was discovered that one of the purses was composed of both poly(methyl methacrylate) and cellulose acetate. The compositions of three artifacts of unknown composition were discovered, corrections to the existing records were made for three other artifacts, and the composition of one artifact was confirmed. This decisive study will contribute to the archival processing and preservation of these artifacts.

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Raman and infrared spectroscopy in conservation and restoration

Cited by 3 publications

References 122 publications

Towards FAIR Data Management in Heritage Science Research: Updates and Progress on the INFRA-ART Spectral Library

Towards FAIR Data Management in Heritage Science Research: Updates and Progress on the INFRA-ART Spectral Library

Non-Destructive Identification and Characterization of Crystopal, A Novel Mid-Twentieth Century Plastic

Determination of the polymer composition of mid-twentieth century purses by Raman spectroscopy

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