Evaluation of five fluorinated compounds as calcarenite protectives

Torrisi, Alberto

doi:10.1016/j.culher.2007.07.006

Cited by 23 publications

(7 citation statements)

References 14 publications

(23 reference statements)

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“…The C-F bond is known to be the strongest chemical bond and it is expected to preserve the polymer chain from mineralization processes promoted by photocatalysis [39]. Fluorinated polymers, which typically have high water-repellent properties, durability, chemical stability, and low chromatic impact on the stone surfaces, are among the most widely used organic materials for stone protection [40][41][42][43][44][45].…”

Section: Literature Surveymentioning

confidence: 99%

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Colangiuli

Calia

Bianco

2015

Construction and Building Materials

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Section: Literature Surveymentioning

confidence: 99%

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Colangiuli

Calia

Bianco

2015

Construction and Building Materials

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“…Their actual resistance to water and photooxidation was evaluated (Melo et al, 1999;Borgia et al, 2001;Chiantore and Lazzari, 2001) finding an unsatisfactory stability under UV irradiation, as well as inadequate water barrier properties over time. Thus, fluorinated polymers were taken into account as possible alternatives, showing some encouraging results, but also questionable surface adhesion properties (Frediani et al, 1982;Torrisi, 2008;Licchelli et al, 2013). Therefore, further efforts were focused on copolymers or blends from both acrylic and fluorinated polymers (Mazzola et al, 2003;Malshe and Sangaj, 2009).…”

Section: Introductionmentioning

confidence: 99%

Durability of Biodegradable Polymers for the Conservation of Cultural Heritage

et al. 2019

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The use of polymers for conservation of cultural heritage is related to the possibility to slow down or stop natural deterioration which, in many cases, corresponds to stopping the entrance of liquid water and to favor spontaneous water vapor removal. Unfortunately, hydrophobicity is generally favored by surface roughness and thus competitive with transparency. It is therefore important to find an optimal balance hydrophobicity, transparency and durability (especially to photooxidation). However, polymers typically used for applications in this field come from non-renewable resources and are not biodegradable. In this work, the mechanical, structural, and optical properties of PLA, PBAT, and a PBAT/PLA blends, as well as surface properties and water vapor permeability, were investigated before and after exposure to UV irradiation, in order to evaluate their durability and suitability for conservation of cultural heritage.

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“…To this aim, several types of polymers able to render hydrophobic the treated surfaces have been tested and commercialized. Acrylic, fluorinated and/or silicon-based products are typically employed as protective coatings for stone surfaces [2][3][4][5][6][7][8][9][10][11]. New materials/procedures are constantly designed to optimize products' formulation and treatment conditions [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Oleo/Hydrophobic Coatings Containing Nano-Particles for the Protection of Stone Materials Having Different Porosity

et al. 2018

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Conservation strategies to limit the degradation of stone materials are being constantly developed. To this aim, new materials are designed to confer hydrophobic properties and anti-graffiti protection to the treated surfaces. Hybrid nanocomposites, based on inorganic nano-particles added to an organic matrix, have been recently proposed for treatments of stone surfaces, obtaining promising and innovative properties. In the present paper, an experimental product based on fluorine resin containing SiO2 nano-particles, a commercial fluorine-based product and a silicon-based material were applied as protective coatings on two calcareous stones (compact and porous) widely employed in the Mediterranean region. All the studied products are expected to provide both water and anti-graffiti protection to both stones’ surfaces. The rheological characterization of the liquid products, changes in color of the surfaces, and variations in water vapor permeability allowed the compatibility of the protective systems applied to stones to be evaluated. Water–stone contact angle measurements and water absorption by capillarity were used to control the action against water ingress. The oleophobicity was assessed by measuring the oil–stone contact angle. The experimental nano-filled product proved to be a suitable hydrophobic coating for compact and porous stones; furthermore, it provides high oleophobicity to the treated surfaces, as required for anti-graffiti systems.

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Evaluation of five fluorinated compounds as calcarenite protectives

Cited by 23 publications

References 14 publications

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Durability of Biodegradable Polymers for the Conservation of Cultural Heritage

Oleo/Hydrophobic Coatings Containing Nano-Particles for the Protection of Stone Materials Having Different Porosity

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