Raman spectroscopy as a powerful technique for the identification of polymers used in cast sculptures from museum collections

Klisińska‐Kopacz, Anna; Łydżba‐Kopczyńska, Barbara; Czarnecka, Małgorzata; Koźlecki, Tomasz; Meléndez, Julio Del Hoyo; Mendys, Agata; Kłosowska-Klechowska, Anna; Obarzanowski, Michał; Frączek, Piotr

doi:10.1002/jrs.5407

Cited by 27 publications

(13 citation statements)

References 30 publications

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“…9 shows evidence that a phthalate plasticiser has been used in the formulation of this modelling clay. The appearance of a strong carbonyl band at 1725 cm −1 combined with a characteristic pair of bands at 1569 and 1535 cm −1 supports the identification of the plasticiser used as diethyl hexyl phthalate (DEHP) [27][28][29]. Infrared bands due to the clay kaolinite are also observed in the spectrum, particularly the distinctive O-H stretching pattern in the 3700-3600 cm −1 region [21,26].…”

Section: Marburg Artworkmentioning

confidence: 57%

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Modelling clay materials used in artworks: an infrared spectroscopic investigation

et al. 2019

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Modelling clays are utilised by artists for their malleable properties. One of the challenges in managing collections containing such materials is the variety of commercial compositions available and, therefore, the variation in the requirements for storage and maintenance of such artefacts. The Art Gallery of New South Wales in Australia is responsible for the care of a range of artworks that contain modelling materials, some of which show detrimental property changes and there is concern for the longevity of such works. The aim of the current research is to determine the compositions of the modelling materials utilised in works produced by different artists in the gallery's collection. Infrared spectroscopy was used to identify the main constituents of samples collected from the works of four different artists and a variety of material types were determined. Oil-based, air-hardening and polymer clays of varying composition were identified in the survey of artworks. Signs of deterioration in particular artworks were able to be characterised using spectroscopy, with the mechanisms identified including loss and oxidation of the oil component. Where a polymer clay was chosen by one artist, the distortion of the artwork was due to flow of the material over time and demonstrates the need for an understanding of the long term properties of the materials being used. The study has highlighted the need for conservators to have a detailed understanding of modelling materials to ensure the longevity of artworks containing this class of materials.

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Section: Marburg Artworkmentioning

confidence: 57%

“…9, with band assignments listed in Table 5. The spectrum shows bands characteristic of a plasticised poly(vinyl chloride) (PVC) [27][28][29]. Although there is overlap of the PVC, plasticiser and kaolinite contributions in the spectrum below 1500 cm −1 , there are certain characteristic bands in the spectrum.…”

Section: Marburg Artworkmentioning

confidence: 99%

Modelling clay materials used in artworks: an infrared spectroscopic investigation

et al. 2019

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“…Madden et al also reported the presence of a longer chain phthalate dioctyl phthalate in PVC; however, as with IR spectroscopy, the similarity of di-alkyl phthalate generally complicates the distinction of homologues [115]. Recently, destructive sampling and analysis by GC/MS were needed to distinguish dimethyl phthalate, dibutyl phthalate and DEHP in conserved PVC sculptures after analysis by a portable Raman instrument [116]. Florescent interference has been found to impede peak detection, and skilled control over the incident laser energy is also required to minimise the invasiveness of the technique for heritage objects.…”

Section: Qualitative and Quantitative Methods For The Analysis Of Plamentioning

confidence: 99%

Plasticiser loss in heritage collections: its prevalence, cause, effect, and methods for analysis

King¹,

Grau-Bové²,

Curran³

2020

Herit Sci

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Plasticiser loss is a topic frequently mentioned in discussions on the degradation of plastic artefacts in museum collections, particularly for plasticised poly (vinyl chloride) and cellulose acetate. Plasticisers may migrate to the plastic’s surface and remain as a deposit, or volatilise into the surrounding environment, both presenting an aesthetic issue and impacting the future stability of the plastic. This paper draws on the work of conservation science, materials degradation, and indoor air quality/emissions studies, to review our current understanding of plasticiser loss. The influence of the material’s intrinsic properties, and environmental factors on migration rates are discussed and related to preventive conservation practices. The methods by which plasticiser migration is studied, including characterisation, are also reviewed, with a particular focus on minimally invasive and non-destructive methods suitable for heritage science research.

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“…The chemical identification of materials is the first step for developing and implementing recommendations for the care and display of resin cast and plastic objects in museum collections. The paper from Klisińska-Kopacz et al [16] presents the advantages as well as the limitations of portable Raman to perform such chemical identification of polymers used in cast sculptures. For that, a comparative analysis of portable and benchtop Raman instruments was performed in the study of materials found in the contemporary art collections of the National Museum in Krakow, Poland.…”

Section: Raman Spectroscopy Of Biological and Organic-based Materialsmentioning

confidence: 99%

Applications of Raman spectroscopy in art and archaeology

Candeias

Madariaga

2019

J Raman Spectroscopy

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Raman spectroscopy as a powerful technique for the identification of polymers used in cast sculptures from museum collections

Cited by 27 publications

References 30 publications

Modelling clay materials used in artworks: an infrared spectroscopic investigation

Modelling clay materials used in artworks: an infrared spectroscopic investigation

Plasticiser loss in heritage collections: its prevalence, cause, effect, and methods for analysis

Applications of Raman spectroscopy in art and archaeology

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