Fabrication of super-hydrophobic surfaces for enhanced stone protection

Manoudis, Panagiotis N.; Tsakalof, Andreas; Karapanagiotis, Ioannis; Zuburtikudis, Ioannis; Panayiotou, Costas

doi:10.1016/j.surfcoat.2008.10.041

Cited by 160 publications

(129 citation statements)

References 32 publications

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“…There was no significant difference among coated and uncoated surfaces. It is suggested that the treatment of marble surface should not change the water vapor transmission rate due to not affecting the proper vapor regime inside the stone [22].…”

Section: Basic Mineralogical and Physical Properties Of Uncoated And mentioning

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: Basic Mineralogical and Physical Properties Of Uncoated And mentioning

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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“…According to the European standard of abrasion resistance test for the stone materials, EN 14157 (2004), the stone surface abrasion values should be not more than 24. Table 5 shows the average values for the abrasion resistance of experimental limestone samples, before and after treatment, and after thermal aging.…”

Section: Abrasion Resistance Test Before and After Artificial Agingmentioning

confidence: 99%

“…The dispersion of nanoparticles in the polymers used in the consolidation and protection processes leads to a significant enhancement of their physiochemical and mechanical properties [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Performance of Clay, SiO2, Ca(OH)2 and CaCO3 - Polymeric Nanocomposites for Conservation and Preservation of Limestone Artworks

Aldoasri¹,

Darwish²,

Adam³

et al. 2018

Preprint

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Environmental deterioration factors are constantly increasing, causing unwanted aesthetic changes to stone artworks due to exposure to various physical and chemical deterioration factors. Inorganic nanoparticlefilled polymer composites have extended their multiple functionalities to various applications, including cultural heritage conservation. Therefore, this study has examined the effects of clay, SiO2, Ca(OH)2 and CaCO3 nanomaterials in the enhancement of the physicomechanical properties of limestone monuments, the aim of the present work being to evaluate comparatively the effectiveness of nanoparticles as consolidation and protection material for limestone artworks. The nanoparticles were added to an acrylic-based copolymer (polyethylmethacrylate (EMA)/methylacrylate (MA) (70/30), in order to improve its physiochemical and mechanical properties, and produced a significant improvement in the ability of the polymers to consolidate and protect the stone. The synthesis process of nanoparticles/polymer nanocomposite has been prepared by an in situ emulsion polymerization system. The nanocomposites contained poly (EMA/MA) with a solid content of 3% [poly (EMA/MA)] in the absence and presence of 5% nanoparticles (0.15 g nanoparticles). Samples were subjected to artificial aging by relative humidity/temperature and acid/salt crystallization weathering to show the optimum conditions of durability and the effectiveness of the nano-mixture in improving the physical and mechanical properties of the stone material. To ensure that the treatment had no negative effects on the physical characteristics of the limestone, the properties of the treated limestone samples were evaluated comparatively before and after artificial aging by the conduct of microstructural (phase morphology studied by means of scanning electron microscopy) and aesthetic (colour and lightness measured by spectrophotometry) analyses. Also used were measurement of static contact angle of water droplets on the surface of the samples, total immersion water absorption, compressive Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 7

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“…In the last decade, the development of innovative nanostructured materials for the conservation of Cultural Heritage was proposed, displaying enhanced properties and effectiveness compared to traditional treatments, encouraging their use both for stone consolidants [8][9][10][11] and protective formulations [12][13][14]. In particular, due to their photocatalytic properties [15], TiO 2 nanoparticles were used for the set-up of self-cleaning treatments with either hydrophilic or hydrophobic behavior [16][17][18][19][20].…”

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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Fabrication of super-hydrophobic surfaces for enhanced stone protection

Cited by 160 publications

References 32 publications

Protection of marble surfaces by using biodegradable polymers as coating agent

Protection of marble surfaces by using biodegradable polymers as coating agent

Performance of Clay, SiO<sub>2</sub>, Ca(OH)<sub>2 </sub>and CaCO<sub>3</sub> - Polymeric Nanocomposites for Conservation and Preservation of Limestone Artworks

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

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