Study of UV ageing effects in modern artists’ paints with MeV-SIMS

Matea Krmpotić; Dubravka Jembrih-Simbürger; Zdravko Siketić; Marta Anghelone; Iva Bogdanović Radović

doi:10.1016/j.polymdegradstab.2021.109769

Study of UV ageing effects in modern artists’ paints with MeV-SIMS

Matea Krmpotić, Dubravka Jembrih-Simbürger, Zdravko Siketić, Marta Anghelone, Iva Bogdanović Radović

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

In the present work, alkyd and acrylic self-made paints containing synthetic organic pigments (SOPs) of different chemical classes (phthalocyanine, quinacridone, and diketopyrrolo-pyrrole) were analysed by Secondary Ion Mass Spectrometry with MeV primary ions (MeV-SIMS) to study the chemical changes that occur due to accelerated UV ageing. MeV-SIMS is an emerging accelerator-based, surface-sensitive mass spectrometry technique that can provide information about the chemical composition in the uppermost layers of materials. Two-component mock-up samples were prepared and aged for two and four months, to mimic environmental ageing over periods of one and two years. The obtained results show that the studied SOPs are stable under the accelerated ageing conditions used in this study and that they can be easily identified in aged paints, while the binder components undergo structural changes due to the photodegradation processes. The kinetics of binder degradation were found to be dependant on the pigment present in the paint, with phthalocyanines having the highest photostabilizing effect amongst the pigments studied. In addition, the acrylic binder exhibited slightly higher stability to UV ageing than the alkyd medium. This study allowed the identification of SOPs and binders in the selected contemporary artworks, which date from different periods and belong to both outdoor and indoor collections.

Original language	English
Article number	109769
Journal	Polymer Degradation and Stability
Volume	195
DOIs	https://doi.org/10.1016/j.polymdegradstab.2021.109769
State	Published - Jan 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

Funding

This work is supported by the Unity Through Knowledge Fund Contract no. 4/13, and the bilateral project between Croatia and Austria HR10/2014. The authors acknowledge financial support from the European Regional Development Fund for the ‘Center of Excellence for Advanced Materials and Sensing Devices’ (Grant No. KK.01.1.1.01.0001). The authors would like to thank Mag. Mirta Pavić and the Museum of Contemporary Art in Zagreb, Croatia for providing the samples from the “MNB” painting and “Plavi cvijet” sculpture as well as the photo of the “MNB” painting, Giulia Savorani and the open-air M.A.C.A.M. museum, Italy for allowing M. Anghelone to sample the mural painting “La dolcezza dell'abisso”, Dora Plavčić for providing additional data on the “MNB” painting samples, and Donny Domagoj Cosic for proofreading the article.

Funders	Funder number
European Regional Development Fund	KK.01.1.1.01.0001

Keywords

Acryl
Alkyd
Artwork
MeV-SIMS
Synthetic organic pigments
UV ageing

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10.1016/j.polymdegradstab.2021.109769

Cite this

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title = "Study of UV ageing effects in modern artists{\textquoteright} paints with MeV-SIMS",

abstract = "In the present work, alkyd and acrylic self-made paints containing synthetic organic pigments (SOPs) of different chemical classes (phthalocyanine, quinacridone, and diketopyrrolo-pyrrole) were analysed by Secondary Ion Mass Spectrometry with MeV primary ions (MeV-SIMS) to study the chemical changes that occur due to accelerated UV ageing. MeV-SIMS is an emerging accelerator-based, surface-sensitive mass spectrometry technique that can provide information about the chemical composition in the uppermost layers of materials. Two-component mock-up samples were prepared and aged for two and four months, to mimic environmental ageing over periods of one and two years. The obtained results show that the studied SOPs are stable under the accelerated ageing conditions used in this study and that they can be easily identified in aged paints, while the binder components undergo structural changes due to the photodegradation processes. The kinetics of binder degradation were found to be dependant on the pigment present in the paint, with phthalocyanines having the highest photostabilizing effect amongst the pigments studied. In addition, the acrylic binder exhibited slightly higher stability to UV ageing than the alkyd medium. This study allowed the identification of SOPs and binders in the selected contemporary artworks, which date from different periods and belong to both outdoor and indoor collections.",

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AU - Radović, Iva Bogdanović

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AB - In the present work, alkyd and acrylic self-made paints containing synthetic organic pigments (SOPs) of different chemical classes (phthalocyanine, quinacridone, and diketopyrrolo-pyrrole) were analysed by Secondary Ion Mass Spectrometry with MeV primary ions (MeV-SIMS) to study the chemical changes that occur due to accelerated UV ageing. MeV-SIMS is an emerging accelerator-based, surface-sensitive mass spectrometry technique that can provide information about the chemical composition in the uppermost layers of materials. Two-component mock-up samples were prepared and aged for two and four months, to mimic environmental ageing over periods of one and two years. The obtained results show that the studied SOPs are stable under the accelerated ageing conditions used in this study and that they can be easily identified in aged paints, while the binder components undergo structural changes due to the photodegradation processes. The kinetics of binder degradation were found to be dependant on the pigment present in the paint, with phthalocyanines having the highest photostabilizing effect amongst the pigments studied. In addition, the acrylic binder exhibited slightly higher stability to UV ageing than the alkyd medium. This study allowed the identification of SOPs and binders in the selected contemporary artworks, which date from different periods and belong to both outdoor and indoor collections.

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Study of UV ageing effects in modern artists’ paints with MeV-SIMS

Abstract

Bibliographical note

Funding

Keywords

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