Treatment of the Abydos reliefs: consolidation and cleaning

Wheeler, Geoffrey; Dinsmore, Jennifer; Ransick, L. J.; Charola, A. Elena; Koestler, Robert J.

doi:10.1179/sic.1984.29.1.42

Cited by 11 publications

(5 citation statements)

References 2 publications

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“…Another fundamental class of colloidal materials largely adopted in stone consolidation is silica and its derivatives to strengthen silicate rock or buildings degraded by erosion and weathering. Commercial coatings based on colloidal silica were already used since the 1970–1980s, − and cohesion gain induced on stone by nanosilica was also proved recently, while the most popular consolidants on the market are traditionally based on alkoxysilanes . However, the latter form networks in the stone that tend to crack, diminishing their effectiveness.…”

Section: Nanoparticles and Hybrid Compositesmentioning

confidence: 99%

“…Commercial coatings based on colloidal silica were already used since the 1970–1980s, 67 − 69 and cohesion gain induced on stone by nanosilica was also proved recently, 70 while the most popular consolidants on the market are traditionally based on alkoxysilanes. 71 However, the latter form networks in the stone that tend to crack, diminishing their effectiveness. Alternatively, Mosquera et al developed in the late 2000s a surfactant-assisted sol–gel process to produce a crack-free uniform mesoporous network of silica nanoparticles in the stone pores; 72 see Figure 2 .…”

Section: Nanoparticles and Hybrid Compositesmentioning

confidence: 99%

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From Nanoparticles to Gels: A Breakthrough in Art Conservation Science

Chelazzi

Baglioni

2023

Langmuir

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Cultural heritage is a crucial resource to increase our society's resilience. However, degradation processes, enhanced by environmental and anthropic risks, inevitably affect works of art, hindering their accessibility and socioeconomic value. In response, interfacial and colloidal chemistry has proposed valuable solutions over the past decades, overcoming the limitations of traditional restoration materials and granting cost-and time-effective remedial conservation of the endangered artifacts. Ranging from inorganic nanoparticles to hybrid composites and soft condensed matter (gels, microemulsions), a wide palette of colloidal systems has been made available to conservators worldwide, targeting the consolidation, cleaning, and protection of works of art. The effectiveness and versatility of the proposed solutions allow the safe and effective treatment of masterpieces belonging to different cultural and artistic productions, spanning from classic ages to the Renaissance and modern/contemporary art. Despite these advancements, the formulation of materials for the preservation of cultural heritage is still an open, exciting field, where recent requirements include coping with the imperatives of the Green Deal to foster the production of sustainable, low-toxicity, and environmentally friendly systems. This review gives a critical overview starting from pioneering works up to the latest advancements in colloidal systems for art conservation, a challenging topic where effective solutions can be transversal to multiple sectors even beyond cultural heritage preservation, from the pharmaceutical and food industry, to cosmetics, tissue engineering, and detergency.

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Section: Nanoparticles and Hybrid Compositesmentioning

confidence: 99%

Section: Nanoparticles and Hybrid Compositesmentioning

confidence: 99%

From Nanoparticles to Gels: A Breakthrough in Art Conservation Science

Chelazzi

Baglioni

2023

Langmuir

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“…In turn, these inorganic/organic units can be chemically modified by adding different functional groups or monomers; an example of this modification is the organofunctional alkoxysilane. This class of compounds is commonly used in the field of consolidation/protective coatings in Cultural Heritage [109,110], in which the silane groups are mainly linked to acrylic, methacrylic, and epoxy-functional units. They result from photochemical crosslinking reactions or induced thermal polymerisation before, during, or after the formation of the silica network.…”

Section: Silicon-based Coatingsmentioning

confidence: 99%

Protecting Street Art from Outdoor Environmental Threats: What Are the Challenges?

Pagnin,

Guarnieri,

Izzo

et al. 2023

Coatings

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Street Art is an artistic expression in constant development, whose interest has grown in recent years among society, public administrations, conservators, and heritage scientists. This growing awareness has given rise to a series of debates between professionals with the intent to expand the knowledge relating to conservation practices and possible protection solutions. Additionally, the paint materials used by contemporary artists are in constant development; therefore, difficulty has emerged in the identification of their degradation processes when exposed to environmental conditions and in the consequent selection of a specific protection system. This review presents an overview of the recent literature and experiences in the field of knowledge and preservation of Street Art, focusing on the type and nature of paint formulations, the main deterioration processes of painted artworks in outdoor conditions, and the most recent advances in materials and methods for the conservation and protection of Street Art. This review aims to emphasise how the approach to the challenge of preservation of Street Art is complex, aspiring to the need for optimised diagnostic protocols for the development of innovative and effective protective coatings. This paper is a starting point to provide suggestions and indications for the development of further research projects within the framework of preservation and protection of contemporary muralism.

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“…Early in the 1970-1990s the consolidants/protectives of choice where typically polymers, especially acrylic resins and their copolymers, which tend to be incompatible with the inorganic substrates (stone, mortars and plasters) they were applied to [6,126]. Their application on Egyptian sculptures and stelae made of Thebes marly limestone (belonging to the Egyptian collection of the Metropolitan Museum, the British Museum, as well as the Phoebe Hearst Museum), alone or in combination with alkoxysilanes [127][128][129][130], did not lead to any significant improvement [8]. This could be partly due to the fact that at the time it was believed that salt damage was the main cause of scaling and flaking observed in such Egyptian limestone sculptures and stelae, although some researchers suggested that clays could play a role in the observed damage [131].…”

Section: Failure Of Previous Conventional Conservation Treatmentsmentioning

confidence: 99%