An Environmental Friendly Fluorinated Oligoamide for Producing Nonwetting Coatings with High Performance on Porous Surfaces

Camaiti, Mara; Brizi, Leonardo; Bortolotti, Villiam; Papacchini, Alessandra; Salvini, Antonella; Fantazzini, Paola

doi:10.1021/acsami.7b09440

Cited by 25 publications

(28 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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]. More recently, hybrid nanocomposites based on inorganic nano-particles added to organic matrices have been proposed for the treatment of stone materials [15,16].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Recently, we developed several innovative coatings based on different partially fluorinated oligoamides (e.g., oligo ethylene-succinamide, -adipamide or -suberamide with two pendant perfluoropolyether segments), which have good solubility in alcoholic and hydro-alcoholic solvents and can be easily applied by common methods (i.e., brush or spray) [18][19][20]. The as-prepared coatings manifested near superamphiphobicity (water CA > 150 • and oil CA > 140 • ) on highly porous Lecce stone, yet the surfaces also possessed a high adhesion property (CAH > 90 • ).…”

Section: Productmentioning

confidence: 99%

“…Acrylic resins, silicon-based resins, microcrystalline waxes, perfluoropolyethers (PFPEs), polyfluorourethanes, fluorinated polymers, and fluoroelastomers are the representative compounds [8][9][10][11][12][13]. Recently, starting from the 21st century, some innovative materials such as structurally modified acrylic polymers and PFPEs, organic-inorganic hybrids, nano-scaled and microemulsions of some polymers, and nanoparticle composites, etc., have being proposed and tested [14][15][16][17][18][19][20]. These products usually show good chemical and physical compatibility, good adhesion, and good solubility, and in some cases a good consolidation effect [9,10,16].…”

mentioning

confidence: 99%

Current Status and Future Prospects of Applying Bioinspired Superhydrophobic Materials for Conservation of Stone Artworks

2020

Self Cite

View full text Add to dashboard Cite

The development of innovative materials is one of the most important focus areas in heritage conservation research. Eligible materials can not only protect the physical and chemical integrity of artworks but also preserve their artistic and aesthetic features. Recently, as one of the hot research topics in materials science, biomimetic superhydrophobic materials have gradually attracted the attention of conservation scientists due to their unique properties. In fact, ultra-repellent materials are particularly suitable for hydrophobization treatments on outdoor artworks. Owing to their excellent hydrophobicity, superhydrophobic materials can effectively prevent the absorption and penetration of liquid water as well as the condensation of water vapor, thus greatly relieving water-induced decay phenomena. Moreover, in the presence of liquid water, the superhydrophobic surfaces equipped with a self-cleaning property can clean the dirt and dust deposited spontaneously, thereby restoring the artistic features simultaneously. In the present paper, besides the basic principles of wetting on solid surfaces, materials, and methods reported for preparing bioinspired ultra-repellent materials, the recently proposed materials for art conservation are also introduced and critically reviewed, along with a discussion on the droplet impact and durability of the artificial superhydrophobic surfaces. Lastly, the current status and the problems encountered in practical application are also pointed out, and the focus of future research is presented as well.

show abstract

“…[16] Commercial and new synthetic hydrophobic products and treatments can be tested by 2D and 3D low-field imaging. [17] The development of NMR single-sided devices [18][19][20][21][22] has introduced further potentiality for CH as a result of their features to be portable and to allow information in non-invasive, nondestructive ways, whatever the extensions of the objects and materials under study.…”

Section: Introductionmentioning

confidence: 99%

Identification of complex structures of paintings on canvas by NMR: Correlation between NMR profile and stratigraphy

Brizi

Bortolotti

Marmotti³

et al. 2020

Magnetic Reson in Chemistry

Self Cite

View full text Add to dashboard Cite

Paintings on canvas are complex structures created by superimposing layers of different composition. Investigations on the structure of these artworks can provide essential information on their state of conservation, pictorial technique, possible overpaintings, and in planning a proper conservation plan. Standard methods of investigation consist in sampling a limited number of fragments for stratigraphic analyses. Despite the recognized validity of these methods, they are affected by evident limitations. Nuclear magnetic resonance (NMR) profiling, often named NMR stratigraphy, is an NMR relaxometry technique applied by single‐sided portable devices developed to overcome the disadvantages of microinvasive stratigraphic analyses. The potential of this approach on artworks, including wall paintings and a few examples of painted canvas, is described in the literature. In this study, NMR profiles of painting on canvas were examined by analyzing transverse relaxation time data by T2 quasi‐continuous distributions and the results compared with standard stratigraphic cross‐sections analysis. Combining signal intensity and T2 quasi‐continuous distributions, the identification of textile, preparatory, and paint layers was enhanced. The diction “NMR stratigraphy” for these inhomogeneous layered artworks is also discussed. Indeed, unlike the stratigraphic cross‐sections, NMR profiles provide information on a volume (flat slice), rather than on a surface, and the collected signal can derive from nonuniform and partially overlapping layers. This study paves the way for extensive investigations on relaxation time quasi‐continuous distributions in various binder/pigment mixtures in order to improve the reliability of NMR profile as an innovative, non–invasive, and nondestructive method for analyzing paintings on canvas.

show abstract

An Environmental Friendly Fluorinated Oligoamide for Producing Nonwetting Coatings with High Performance on Porous Surfaces

Cited by 25 publications

References 40 publications

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

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

Current Status and Future Prospects of Applying Bioinspired Superhydrophobic Materials for Conservation of Stone Artworks

Identification of complex structures of paintings on canvas by NMR: Correlation between NMR profile and stratigraphy

Contact Info

Product

Resources

About