Enhanced anti-graffiti or adhesion properties of polymers using versatile combination of fluorination and polymer grafting

Kharitonov, A. P.; Симбирцева, Г. В.; Nazarov, V. G.; Stolyarov, V. P.; Dubois, Marc; Peyroux, Jérémy

doi:10.1016/j.porgcoat.2015.06.021

Cited by 25 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, physical, chemical, and biological processes may act, in isolation or in combination, yielding to the loss of surface integrity or even to structural failure. To provide protection against graffiti, many polymer-based coatings, displaying suitable properties (mainly oleo/hydrophobicity), have been formulated [ 12 , 13 , 14 , 15 , 16 ], but actually the anti-graffiti action needs to be proved on the particular stone material requiring protection. Biodeterioration caused by birds is another main cause of damage for stone materials in buildings, statues, and monuments [ 17 , 18 ], especially in historic city centers.…”

Section: Introductionmentioning

confidence: 99%

Novel Nano-Filled Coatings for the Protection of Built Heritage Stone Surfaces

Lettieri

Masieri²,

Frigione

2021

Nanomaterials

View full text Add to dashboard Cite

An experimental nano-filled coating, based on a fluorine resin containing SiO2 nano-particles, was applied on calcareous stones, representative of materials used in buildings and monuments of the Mediterranean basin; for comparison purposes, two commercial products were applied on the same substrates. The efficacy of the protective treatments was assessed by analyzing different characteristics of the three experimental/commercial products, i.e., color changes and permeability to water vapor to evaluate the treatments’ harmlessness; capillary water absorption and water stone contact angle to evaluate the protection against water ingress; oleophobicity of the treated surfaces and the behavior under staining by acrylic blue-colored spray paint and felt-tip marker to verify the anti-graffiti action. Finally, the properties of the treated stone surfaces were analyzed also after the application of pancreatin, used to simulate bird excreta (guano). The protective coatings were found to promote graffiti removal, reducing also the detrimental effects due to simulated guano. The experimental nano-filled product, in addition, was able to provide outstanding performance but using smaller amounts of product in comparison to commercial systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Novel Nano-Filled Coatings for the Protection of Built Heritage Stone Surfaces

Lettieri

Masieri²,

Frigione

2021

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The modification of electrically conducting surfaces (e.g., electrodes) with polymers possessing a particular function can be performed by many well-established methods, for example by dissolving the polymer in a solvent and casting of this solution on electrode surface [3], polymerization using various chemical initiators [12] or altered environment conditions [13], electrochemical polymerization directly onto the electrode surface [2,14,15]. Polymer-modified electrodes can be composed of more than one functional layer, e.g., they can be multilayered [16,17], or additionally modified with some functionalized layers that can be formed during or after formation of initial polymer layer [18], etc.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Deposition and Investigation of Poly-9,10-Phenanthrenequinone Layer

et al. 2019

View full text Add to dashboard Cite

In this research, a 9,10-phenanthrenequinone (PQ) was electrochemically polymerized on a graphite rod electrode using potential cycling. The electrode modified by poly-9,10-phenanthrenequinone (poly-PQ) was studied by means of cyclic voltammetry, electrochemical impedance spectroscopy, atomic force microscopy and scanning electron microscopy. The poly-PQ shows variations in growth pattern depending on the number of potential cycles for the initiation of polymerization. Formed poly-PQ layer demonstrates good electric conductivity, great degree of electrochemical capacitance and unique oxidation/reduction properties, which are suitable for broad technological applications, including applicability in biosensors, supercapacitors and in some other electrochemical systems.

show abstract

“…The sacrificial coatings are removed during the cleaning process and they need to be renewed; the semi-permanent systems endure a few cleaning cycles (normally, not more than two or three); the permanent products are not taken away during the cleaning process and they are able to withstand several cleaning cycles. The formulations suitable for application on stone materials [15][16][17][18][19][20][21][22][23] are mainly based on waxes, fluorinated polymers, silicon resins or polyurethanes; more recently, coatings incorporating nano-particles [17,[24][25][26], organic-inorganic hybrid products [27][28][29] and surface functionalization [30] have been investigated as potential anti-graffiti systems. The fundamental characteristics that these treatments must display are: transparency, permeability to water vapor, durability under outdoor conditions.…”

Section: Introductionmentioning

confidence: 99%

Anti-Graffiti Behavior of Oleo/Hydrophobic Nano-Filled Coatings Applied on Natural Stone Materials

Lettieri¹,

Masieri²,

Pipoli

et al. 2019

Coatings

View full text Add to dashboard Cite

In recent years, graffiti writings are increasingly regarded as a form of art. However, their presence on historic building remains a vandalism and different strategies have been developed to clean or, preferably, protect the surfaces. In this study, an experimental nano-filled coating, based on fluorine resin containing SiO2 nano-particles, and two commercial products have been applied on compact and porous calcareous stones, representative of building materials used in the Mediterranean basin, and their anti-graffiti ability has been analyzed. All the tested experimental and commercial coatings exhibited high hydrophobicity and oleophobicity, thus meeting one of the basic requirements for anti-graffiti systems. The effects of staining by acrylic blu-colored spray paint and felt-tip marker were, then, assessed; the properties of the treated stone surfaces after cleaning by acetone were also investigated. Visual observations, contact angle measurements and color evaluations were performed to this aim. It was found that the protective coatings facilitated the spray paint removal; however high oleophobicity or paint repellence did not guarantee a complete cleaning. The stain from the felt-tip marker was confirmed to be extremely difficult to remove. The cleaning with a neat unconfined solvent promoted the movement of the applied polymers (and likely of the paint, as well) in the porous structure of the stone substrate.

show abstract

Enhanced anti-graffiti or adhesion properties of polymers using versatile combination of fluorination and polymer grafting

Cited by 25 publications

References 22 publications

Novel Nano-Filled Coatings for the Protection of Built Heritage Stone Surfaces

Novel Nano-Filled Coatings for the Protection of Built Heritage Stone Surfaces

Electrochemical Deposition and Investigation of Poly-9,10-Phenanthrenequinone Layer

Anti-Graffiti Behavior of Oleo/Hydrophobic Nano-Filled Coatings Applied on Natural Stone Materials

Contact Info

Product

Resources

About