Tailoring new fluorinated acrylic copolymers as protective coatings for marble

Toniolo, Lucia; Poli, Tommaso; Castelvetro, Valter; Manariti, Antonella; Chiantore, Oscar; Lazzari, Massimo

doi:10.1016/s1296-2074(02)01240-2

Cited by 133 publications

(78 citation statements)

References 4 publications

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“…The most common method used to inhibit gypsum formation was coating of stone surfaces by synthetic polymers [3][4][5][6][7][8][9][10]. However, such coatings have been found even more harmful than those uncoated ones due to high absorption of SO 2 gas and the entrapment of water vapor by polymers [3].…”

Section: Introductionmentioning

confidence: 99%

Protection of marble surfaces by using biodegradable polymers as coating agent

Ocak

Sofuoğlu

Tıhmınlıoğlu

et al. 2009

Progress in Organic Coatings

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Section: Introductionmentioning

confidence: 99%

Protection of marble surfaces by using biodegradable polymers as coating agent

Ocak

Sofuoğlu

Tıhmınlıoğlu

et al. 2009

Progress in Organic Coatings

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“…The treatment of very low porous stones, such as marbles, is challenging since the applied products can hardly penetrate into the material and generally show poor adhesion to the substrate, thus affecting their performances [3]. Acrylics and partially fluorinated acrylics, perfluoropolymers, siloxanes and silanes are the main classes of polymeric formulations used in the field of stone protection [4][5][6]. In addition, inorganic protective treatments, such as protective oxalate and sacrificial lime layers, were developed since they show higher compatibility with the mineral nature of the stone substrate and can provide a better resistance to environmental agents and pollutants [2,7].…”

Section: Introductionmentioning

confidence: 99%

On-site monitoring of the performance of innovative treatments for marble conservation in architectural heritage

et al. 2017

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Innovative nanostructured treatments for stone conservation, based on dispersions of photoactive TiO 2 nanoparticles, recently studied in our research group, provided interesting results after laboratory testing. Unfortunately, it is almost impossible to accurately reproduce in the lab the complexity of field exposure conditions. It is then of crucial importance to evaluate the behaviour and durability of new treatments in situ, once they are applied to real deteriorated surfaces of the architectural heritage exposed in outdoor. In the present research, the effectiveness of a TEOS-nanoTiO 2 treatment and of two nanocomposites based on nano-TiO 2 dispersion in organosiloxane and functionalized SiO 2 for the protection of two specific marbles-Candoglia and Crevoladossola-has been evaluated on-site. The effect of the introduction of innovative titania nanoparticles in selected commercial products has been examined focusing on compatibility and protection efficacy in real exposure condition. An on-site testing protocol has been defined and carried out for 12 months after the application, considering colour and morphology changes and water absorption by capillarity. The nano-TiO 2 addition does not hinder the performance of the protective treatments while it provides a positive contribution in soiling reduction. The results will be implemented in the operative framework of the ongoing conservation project of the considered historical façade.

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“…Fluorinated acrylic polymers, especially with fluoroalkyl side chains are used as components for high performance paint and varnish in the textile, paper, leather, construction, automotive, aerospace industry, optics, and microelectronics [5][6][7][8]. The pendant -CF 3 end groups on the fluoroalkyl side chains would segregate to the surface of polymer films, which would offer the polymer low surface free energy and good water-repellent properties.…”

Section: Introductionmentioning

confidence: 99%

Transparent fluorinate acrylic polyurethane with hydrophobicity obtained by crosslinking of hydroxyl-containing fluoroacrylate copolymer with HDI trimer

Guo

Tang

Yang

2015

Materials Science-Poland

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Hydroxyl-containing fluoroacrylate copolymers with different fluorine and hydroxyl concentrations were synthesized via free-radical solution polymerization. Transparent fluorinated polyurethane (FPU) films were prepared by curing the copolymers with HDI (hexamethylene diisocyanate) trimer. The Fourier transform infrared spectroscopy (FT-IR) results revealed introduction of fluorine both into the copolymer and polyurethane. X-ray photoelectron spectroscopy (XPS) analyses indicated that a gradient concentration of fluorine existed in the depth profile of the fluorinated polyurethane films. The highest contact angle (CA) was obtained for the FPU film with fluoroacrylate monomer concentration of 22 wt.% because of fluorine present on the film surface. The surface topographies detected by SEM and AFM indicated that surface roughness contributed little to the film hydrophobicity. By increasing the fluoroacrylate monomer concentration, the decreasing of crosslinking degree of hard segment resulted in lowering the first degradation temperature, while more C-F groups in soft segment led to higher second degradation temperature. UV-Vis spectrophotometer measurements indicated that the FPU film with the fluoroacrylate monomer concentration of 16 wt.% still had a high transmittance of more than 90 % in the whole visible wavelength range.

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Tailoring new fluorinated acrylic copolymers as protective coatings for marble

Cited by 133 publications

References 4 publications

Protection of marble surfaces by using biodegradable polymers as coating agent

Protection of marble surfaces by using biodegradable polymers as coating agent

On-site monitoring of the performance of innovative treatments for marble conservation in architectural heritage

Transparent fluorinate acrylic polyurethane with hydrophobicity obtained by crosslinking of hydroxyl-containing fluoroacrylate copolymer with HDI trimer

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