A Comparative Surface Cleaning Study of <i>Op Structure</i>, an Op Art PMMA Sculpture by Michael Dillon

“…Parallel to the development of the nanostructured cleaning fluids, however, research has focused on the design of polymer networks able to confine the fluids, as well as simple aqueous solutions or solvent blends, granting controlled release on water- or solvent-sensitive surfaces that are frequently met in art conservation. 13,22,54,63 This is a crucial task that has led to the development of different families of polymer formulations. Traditionally, polyacrylic acid (PAA) 54 and cellulose ethers 64 have been employed to thicken solvents into viscous dispersions that grant only partial release control in the removal of aged varnishes from paintings.…”

Section: Polymers Solutions and Gels In Art Preservation – An Overviewmentioning

confidence: 99%

New sustainable polymers and oligomers for Cultural Heritage conservation

Bandelli,

Mastrangelo,

Poggi

et al. 2024

Chem. Sci.

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“…Gelled formulations are used to lengthen solution retention time and to improve control over the cleaning process. Many formulations are common in conservation–restoration [ 4 , 5 ]: polyacrylic (Pemulen ® or Carbopol ® ), cellulose-based (CMC (carboxymethylcellulose) and cellulose ether), polysaccharides (agar, gellan gum or xanthan gum), emulsions, and poly(vinyl alcohol) (PVA-borax and gels developed by the University of Florence (Center for Colloid and Surface Science: CSGI)).…”

Section: Introductionmentioning

confidence: 99%

The Use of Hydrogels in the Treatment of Metal Cultural Heritage Objects

Guilminot

2023

Gels

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Currently gels are widely used in the restoration of paintings, graphic arts, stuccowork and stonework, but their use in metal restoration is less widespread. In this study, several polysaccharide-based hydrogels (agar, gellan and xanthan gum) were selected for use in metal treatments. The use of hydrogels allows to localize a chemical or electrochemical treatment. This paper presents several examples of treatment of metal objects of cultural heritage, i.e., historical or archaeological objects. The advantages, disadvantages and limits of hydrogel treatments are discussed. The best results are obtained for the cleaning of copper alloys via associating an agar gel with a chelating agent (EDTA (ethylenediaminetetraacetic acid) or TAC (tri-ammonium citrate)). The hot application allows to obtain a peelable gel, particularly adapted for historical objects. Electrochemical treatments using hydrogels have been successful for the cleaning of silver and for the dechlorination of ferrous or copper alloys. The use of hydrogels for the cleaning of painted aluminum alloys is possible but it has to be coupled with mechanical cleaning. However, for the cleaning of archaeological lead, the cleaning using hydrogels was not very effective. This paper shows the new possibilities of using hydrogels for the treatment of metal cultural heritage objects: agar is the most promising hydrogel.

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A Comparative Surface Cleaning Study of Op Structure, an Op Art PMMA Sculpture by Michael Dillon

Cited by 7 publications

References 20 publications

New horizons on advanced nanoscale materials for Cultural Heritage conservation

New horizons on advanced nanoscale materials for Cultural Heritage conservation

New sustainable polymers and oligomers for Cultural Heritage conservation

The Use of Hydrogels in the Treatment of Metal Cultural Heritage Objects

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