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Conservation of artists' acrylic emulsion paints: XPS, NEXAFS and ATR-FTIR studies of wet cleaning methods.

Willneff EA, Ormsby BA, Stevens JS, Jaye C, Fischer DA, Schroeder S - Surf Interface Anal (2014)

Bottom Line: Visual analysis established the relative cleaning efficacy of the wet cleaning treatments in line with previous results.X-ray spectroscopy analysis provided significant additional findings, including evidence for (i) surfactant extraction following aqueous swabbing, (ii) modifications to pigment following cleaning and (iii) cleaning system residues. © 2014 The Authors.Surface and Interface Analysis published by John Wiley & Sons, Ltd.

View Article: PubMed Central - PubMed

Affiliation: School of Chemical Engineering and Analytical Science, The University of Manchester The Mill, Sackville Street, Manchester, M13 9PL, UK.

ABSTRACT

Works of art prepared with acrylic emulsion paints became commercially available in the 1960s. It is increasingly necessary to undertake and optimise cleaning and preventative conservation treatments to ensure their longevity. Model artists' acrylic paint films covered with artificial soiling were thus prepared on a canvas support and exposed to a variety of wet cleaning treatments based on aqueous or hydrocarbon solvent systems. This included some with additives such as chelating agents and/or surfactants, and microemulsion systems made specifically for conservation practice. The impact of cleaning (soiling removal) on the paint film surface was examined visually and correlated with results of attenuated total reflection Fourier transform infrared, XPS and near-edge X-ray absorption fine structure analyses - three spectroscopic techniques with increasing surface sensitivity ranging from approximately - 1000, 10 and 5 nm, respectively. Visual analysis established the relative cleaning efficacy of the wet cleaning treatments in line with previous results. X-ray spectroscopy analysis provided significant additional findings, including evidence for (i) surfactant extraction following aqueous swabbing, (ii) modifications to pigment following cleaning and (iii) cleaning system residues. © 2014 The Authors. Surface and Interface Analysis published by John Wiley & Sons, Ltd.

No MeSH data available.


Related in: MedlinePlus

Cl 2p XP spectra of the Talens yellow paint film are very responsive to cleaning treatments.
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fig03: Cl 2p XP spectra of the Talens yellow paint film are very responsive to cleaning treatments.

Mentions: During cleaning, pigment transfer onto the cotton swabs was repeatedly observed during cleaning of the Talens film but to varying degrees depending on the cleaning agent used. While ATR-FTIR did not detect associated modifications to the surface of the paint film, XP spectra of chlorine – an element of the azo yellow pigment and primary contributor to the chlorine signal in these measurements – proved sensitive (Fig. 3). In the Cl 2p emission from the Talens films, the Cl signal was more intense after cleaning with solvent-based systems (PS and ME) than after cleaning with water-based agents (W and ET).


Conservation of artists' acrylic emulsion paints: XPS, NEXAFS and ATR-FTIR studies of wet cleaning methods.

Willneff EA, Ormsby BA, Stevens JS, Jaye C, Fischer DA, Schroeder S - Surf Interface Anal (2014)

Cl 2p XP spectra of the Talens yellow paint film are very responsive to cleaning treatments.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4376249&req=5

fig03: Cl 2p XP spectra of the Talens yellow paint film are very responsive to cleaning treatments.
Mentions: During cleaning, pigment transfer onto the cotton swabs was repeatedly observed during cleaning of the Talens film but to varying degrees depending on the cleaning agent used. While ATR-FTIR did not detect associated modifications to the surface of the paint film, XP spectra of chlorine – an element of the azo yellow pigment and primary contributor to the chlorine signal in these measurements – proved sensitive (Fig. 3). In the Cl 2p emission from the Talens films, the Cl signal was more intense after cleaning with solvent-based systems (PS and ME) than after cleaning with water-based agents (W and ET).

Bottom Line: Visual analysis established the relative cleaning efficacy of the wet cleaning treatments in line with previous results.X-ray spectroscopy analysis provided significant additional findings, including evidence for (i) surfactant extraction following aqueous swabbing, (ii) modifications to pigment following cleaning and (iii) cleaning system residues. © 2014 The Authors.Surface and Interface Analysis published by John Wiley & Sons, Ltd.

View Article: PubMed Central - PubMed

Affiliation: School of Chemical Engineering and Analytical Science, The University of Manchester The Mill, Sackville Street, Manchester, M13 9PL, UK.

ABSTRACT

Works of art prepared with acrylic emulsion paints became commercially available in the 1960s. It is increasingly necessary to undertake and optimise cleaning and preventative conservation treatments to ensure their longevity. Model artists' acrylic paint films covered with artificial soiling were thus prepared on a canvas support and exposed to a variety of wet cleaning treatments based on aqueous or hydrocarbon solvent systems. This included some with additives such as chelating agents and/or surfactants, and microemulsion systems made specifically for conservation practice. The impact of cleaning (soiling removal) on the paint film surface was examined visually and correlated with results of attenuated total reflection Fourier transform infrared, XPS and near-edge X-ray absorption fine structure analyses - three spectroscopic techniques with increasing surface sensitivity ranging from approximately - 1000, 10 and 5 nm, respectively. Visual analysis established the relative cleaning efficacy of the wet cleaning treatments in line with previous results. X-ray spectroscopy analysis provided significant additional findings, including evidence for (i) surfactant extraction following aqueous swabbing, (ii) modifications to pigment following cleaning and (iii) cleaning system residues. © 2014 The Authors. Surface and Interface Analysis published by John Wiley & Sons, Ltd.

No MeSH data available.


Related in: MedlinePlus