Accelerated UV ageing studies of acrylic, alkyd, and polyvinyl acetate paints: Influence of inorganic pigments

Pintus, Valentina; Wei, Shuya; Schreiner, Manfred

doi:10.1016/j.microc.2015.07.009

Cited by 79 publications

(52 citation statements)

References 28 publications

(42 reference statements)

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“…Changes in specific functional groups were monitored quantitatively with the use of ratios between the absorbance of the most exposed and the unexposed sample. Two peaks were assessed: methyl contribution at 2956 cm −1 and carbonyl contribution at 1726 cm −1 [11]. Results are expressed as a percentage that represents relative amounts of remaining functional groups (Equation (2)).…”

Section: Atr-ftir Spectroscopy Analysismentioning

confidence: 99%

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Evaluation of the Impacts of Four Weathering Methods on Two Acrylic Paints: Showcasing Distinctions and Particularities

2019

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Two commercial waterborne wood acrylic paints were applied to wood samples and the weathering resistance of samples was tested using four different weathering methods: outdoor exposure in Arizona (USA), Florida (USA), and the province of Quebec (Canada), and accelerated weathering in a QUV (fluorescent) weatherometer. Degradation was characterised by colorimetric and FTIR analyses. FTIR confirmed the importance of paint composition in the resistance of samples to weathering. Polymer sensitivity to UV radiation was clearly evident. An interpretation of discoloration in terms of either the energy received by the samples or the length of exposure is presented. Strong differences existed between the four weathering methods. Particularities of each method are discussed and recommendations regarding their application for effective testing are proposed. Overall, in addition to accelerated weathering tests, we conclude that it is necessary to test paints in an end-use environment for accurate assessment of their likely performance. This study confirms the multifactorial aspect of the weathering process.

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Section: Atr-ftir Spectroscopy Analysismentioning

confidence: 99%

“…Their resistance to degradation differs depending on their formulations. As an example, the nature of the pigments and dyes significantly impacts the UV (ultraviolet) resistance of the coating [11][12][13]. Their exposure to weathering eventually decreases the aesthetic and protective qualities of the coating.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Impacts of Four Weathering Methods on Two Acrylic Paints: Showcasing Distinctions and Particularities

2019

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“…Other acids present in the films such as acetic, formic or sulphuric acid also exacerbate iron corrosion [24]. According to literature cellulose nitrate was blended with other resins to improve properties like gloss, adhesion and hardness [19], in the actual sample, a characteristic doublet for C=C aromatic stretch at 1600 cm −1 as well as C=O stretching band at 1721 cm −1 could be attributed to alkyd [25,26] as blending resin. Chrome yellow bands (Fig.…”

Section: Pigments and Binders Of Pmo-u1mentioning

confidence: 99%

Uncovering the illegible: multi-analytical approach to reveal paint stratigraphy of corroded signposts from the Auschwitz-Birkenau State Museum

et al. 2019

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Object discoveries from the Auschwitz-Birkenau State Museum (PMA-B) in Poland challenge the efforts to preserve paint on corroded steel supports. The objects have been exposed to outdoor weathering conditions and then buried for about 65 years. This caused severe damage, such as corrosion and paint delamination. The fragile condition of such cultural heritage objects makes their preservation difficult and comprehensive studies for paint conservation are lacking. Additionally, a thorough investigation of used materials is needed to put objects produced by forced labour in historical context. In this study, we analysed signposts from the Auschwitz-Birkenau State Museum (Poland) collection to gain information about used materials, the object's genesis as well as damage phenomenology. Literature research suggests that the signposts may be produced within the former German NAZI concentration and extermination camp. Inorganic constituents were identified using elemental analysis, such as X-ray fluorescence (XRF) and scanning electron microscopy coupled to an energy dispersive X-ray spectrometer (SEM-EDS). Organic matter was analysed utilizing vibrational spectroscopic instrumentation Fourier transform infrared spectroscopy (FTIR). Our results include the use of synthetic organic pigments (SOPs) and binders, which were newly emerged paint materials at that time. The study highlights the need for conservators to have detailed understanding of composite materials and demonstrates the need for further investigation concerning painted steel objects.

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“…Ein ähnliches Vorgehen wurde zur Analyse von Acrylfarben und Alkylharzen in Kunstwerken benutzt . Der Double‐Shot spielt eine zentrale Rolle in der Untersuchung der Effekte von anorganischen Pigmenten in der Alterung moderner Gemälde, durch das Anzeigen von Veränderungen in den relativen Konzentrationen der Pyrolyseprodukte im ersten und zweiten thermischen Desorptionsschritt . Die Verhältnisse der Oxidationsprodukte von CO, CO 2 , H 2 O(O) zu den Deacetylierungsprodukten (Essigsäure, A) und den Hauptketten‐Scherprodukten (Benzol, B) wurden dadurch berechnet und zeigen, dass der O/A‐ und O/B‐Wert für alle gealterten Proben höher ist als beim ungealterten Gegenstück (Abbildung ), ein Hinweis auf den Einfluss der Pigmente auf die Alterung der Farbe …”

Section: Double‐shot‐ Multi‐shot‐ Und Heart‐cut‐py‐gc/msunclassified

“…In der ersten Anwendung der TSP in der Wissenschaft der Kulturgüter erwies sich die hohe Heizrate und die verhältnismäßig lange Pyrolysedauer (3 Minuten) als ideal für die Beschreibung des Bernsteins . Andere wichtige instrumentelle Entwicklungen sind Multi‐Shot‐Pyrolyseschritte und die direkte Kopplung von Pyrolyse mit Massenspektrometrie wie in der EGA‐MS (“evolved gas analysis–mass spectrometry”)…”

Section: Introductionunclassified

Anwendung der analytischen Pyrolyse zur Untersuchung organischer Materialien in Kulturgütern

et al. 2018

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Bei der molekulare Charakterisierung von organischen Materialien in Proben von Kunstwerken und historischen Objekten wird traditionell die qualitative und quantitative Analyse mittels HPLC und GC durchgeführt. Heutige Ansätze, basierend auf analytischer Pyrolyse, ermöglichen die Analyse von Proben ohne chemische Vorbehandlung. Die Pyrolyse, die bisher oft als Screening‐Methode angesehen wurde, birgt bisher unerkannte Möglichkeiten dank jüngster Entwicklungen in der instrumentellen Analytik. Organische Materialien makromolekularer Natur oder solche, die während des Trocknens und Alterns polymerisieren, können nun besser untersucht werden. Farbschichten und archäologische organische Substanzen beinhalten oft als Hauptbestandteil unlösliche und chemisch nicht‐hydrolisierbare Bestandteile, die durch GC und HPLC nicht zugänglich sind. Bis zum heutigen Tage haben sich die wissenschaftlichen Untersuchungen organischer Bestandteile von Kunstgegenständen und historischen Objekten vor allem auf die löslichen Nebenbestandteile beschränkt. Dieser Kurzaufsatz präsentiert die jüngsten Fortschritte bei qualitativen und semiquantitativen Analysen von organischen Materialien in Kulturgütern, basierend auf analytischer Pyrolyse gekoppelt mit Massenspektrometrie.

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Accelerated UV ageing studies of acrylic, alkyd, and polyvinyl acetate paints: Influence of inorganic pigments

Cited by 79 publications

References 28 publications

Evaluation of the Impacts of Four Weathering Methods on Two Acrylic Paints: Showcasing Distinctions and Particularities

Evaluation of the Impacts of Four Weathering Methods on Two Acrylic Paints: Showcasing Distinctions and Particularities

Uncovering the illegible: multi-analytical approach to reveal paint stratigraphy of corroded signposts from the Auschwitz-Birkenau State Museum

Anwendung der analytischen Pyrolyse zur Untersuchung organischer Materialien in Kulturgütern

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