Obtaining SiO 2 –fluorinated PLA bionanocomposites with application as reversible and highly-hydrophobic coatings of buildings

Pedna, Andrea; Pinho, Luís; Frediani, Piero; Mosquera, María J.

doi:10.1016/j.porgcoat.2015.09.024

Cited by 34 publications

(30 citation statements)

References 27 publications

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“…Other responsive systems include self-healing or selfcleaning materials.C urrently,h ybrid coatings (for example, combining organic polymers and inorganic nanoparticles) are being explored to provide works of art with improved resistance to soiling, pollution and degradation. [33] Implementing these perspectives in the framework of colloid and materials science,will enable the conservation of contemporary artefacts that exhibit highly complex composition and are affected by fast degradation processes,anissue still unsolved by traditional restoration methods. Figure 6.…”

Section: Perspectives and Challengesmentioning

confidence: 99%

Microemulsions, Micelles, and Functional Gels: How Colloids and Soft Matter Preserve Works of Art

2018

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Colloid science provides fundamental knowledge to fields such as the pharmaceutical, detergency, paint, and food industry. An exciting application is art conservation, which poses a challenge owing to the complex range of interfacial interactions involved in restoring artefacts. Currently, the majority of the most performing and environmentally safe cleaning and consolidation agents for artworks belong to soft matter and colloids. The development and application of increasingly complex systems, from microemulsions to semi-interpenetrating hydrogels containing such fluids, is presented. These systems have been used on diverse artefacts, from Renaissance frescos to works by Picasso and Pollock. Chemical design can be implemented to meet the requirements of curators, and knowledge of the colloid structure and dynamics can overcome serendipitous approaches of traditional conservation practice. Future perspectives for soft matter and colloid science in the field of cultural heritage preservation are also summarized.

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Section: Perspectives and Challengesmentioning

confidence: 99%

Microemulsions, Micelles, and Functional Gels: How Colloids and Soft Matter Preserve Works of Art

2018

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“…Consequently, as the biocalcareous stone is a high porosity material composed of macropores with distance between roughness peaks in the micrometer range, and a significantly lower distance between roughness peaks in the nanometer range is required to produce a Cassie-Baxter regime [13,33,47]. The coating containing nanoparticles (UCA-TS) cannot produce a repellent surface on which the water droplets do not stick [48]. These high pitch values promote a Wenzel surface [33,48].…”

Section: Evaluation Of the Effectiveness On Quarry Stonementioning

confidence: 99%

“…The coating containing nanoparticles (UCA-TS) cannot produce a repellent surface on which the water droplets do not stick [48]. These high pitch values promote a Wenzel surface [33,48]. In this scenario, water penetrates into the grooves and valleys of roughness, promoting a high adhesion [49].…”

Section: Evaluation Of the Effectiveness On Quarry Stonementioning

confidence: 99%

New Consolidant-Hydrophobic Treatment by Combining SiO2 Composite and Fluorinated Alkoxysilane: Application on Decayed Biocalcareous Stone from an 18th Century Cathedral

et al. 2018

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An effective procedure has been developed to consolidate and hydrophobize decayed monumental stones by a simple sol-gel process. The sol contains silica oligomer, silica nanoparticles and a surfactant, preventing gel cracking. The effectiveness of the process on biocalcareous stone samples from an 18th century cathedral has been evaluated, and it was found that the gel creates effective linking bridges between mineral grains of the stone. Silica nanoparticles produced a significant increase in the mechanical resistance and cohesion of the stone. The application of an additional fluorinated oligomer onto the consolidated stone gave rise to a surface with lasting hydrophobicity, preventing water absorption.

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“…combining organic polymers and inorganic nanoparticles) are being explored to provide works of art with improved resistance to soiling, pollution and degradation. [32] Implementing these perspectives in the framework of colloid and materials science, will enable the conservation of contemporary artefacts that exhibit highly complex composition and are affected by fast degradation processes, an issue still unsolved by traditional restoration methodologies. …”

Section: Perspectives and Challengesmentioning

confidence: 99%

“…B. Kombination von organischen Polymeren und anorganischen Nanopartikeln) erforscht, um Kunstwerke mit verbesserter Beständigkeit gegen Verschmutzung,Schadstoffbelastung und Abbau auszustatten. [33] Die Umsetzung dieser Perspektiven im Rahmen der Kolloid-und Materialwissenschaft wird die Konservierung zeitgençssischer Artefakte ermçglichen, die eine hochkomplexe Zusammensetzung aufweisen und durch schnelle Abbauprozesse beeinträchtigt werden -e in Aspekt, der durch herkçmmliche Restaurierungsmethoden noch nicht angegangen wurde.…”

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Mikroemulsionen, Micellen und funktionelle Gele: Erhaltung von Kunstwerken mit Kolloiden und weicher Materie

Chelazzi¹,

Giorgi²,

Baglioni³

2018

Angewandte Chemie

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Die Kolloidwissenschaft liefert grundlegende Erkenntnisse für z. B. die pharmazeutische Industrie oder die Wasch‐ und Reinigungsmittel‐, Farb‐ und Nahrungsmittelindustrie. Eine interessante Anwendung ist die Erhaltung von Kunstwerken, die wegen der komplexen Grenzflächenwechselwirkungen, die mit der Restaurierung von Artefakten verbunden sind, eine anspruchsvolle Aufgabe ist. Derzeit ist die Mehrzahl der wirksamsten und umweltverträglichsten Reinigungs‐ und Konsolidierungsmittel für Kunstwerke der weichen Materie und Kolloiden zuzuordnen. Die Entwicklung und Anwendung von immer komplexeren Systemen, von Mikroemulsionen bis zu semi‐interpenetrierenden Hydrogelen, die derartige Flüssigkeiten enthalten, werden in diesem Kurzaufsatz aufgezeigt. Diese Systeme wurden bei verschiedenen Artefakten eingesetzt: von Fresken der Renaissance bis zu Werken von Picasso und Pollock. Chemisches Design kann genutzt werden, um den Anforderungen von Konservatoren gerecht zu werden, und mit den Erkenntnissen zur Struktur und Dynamik von Kolloiden können zufällige Ansätze der herkömmlichen Konservierungspraxis überwunden werden. Außerdem werden die Perspektiven der Anwendung von Kolloiden und weicher Materie für die Erhaltung von Kulturerbe zusammengefasst.

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Obtaining SiO 2 –fluorinated PLA bionanocomposites with application as reversible and highly-hydrophobic coatings of buildings

Cited by 34 publications

References 27 publications

Microemulsions, Micelles, and Functional Gels: How Colloids and Soft Matter Preserve Works of Art

Microemulsions, Micelles, and Functional Gels: How Colloids and Soft Matter Preserve Works of Art

New Consolidant-Hydrophobic Treatment by Combining SiO2 Composite and Fluorinated Alkoxysilane: Application on Decayed Biocalcareous Stone from an 18th Century Cathedral

Mikroemulsionen, Micellen und funktionelle Gele: Erhaltung von Kunstwerken mit Kolloiden und weicher Materie

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