Application of polymer coatings and nanoparticles in consolidation and hydrophobic treatment of stone monuments

Ershad‐Langroudi, Amir; Fadaei, Hamid; Ahmadi, K.

doi:10.1007/s13726-018-0673-y

Cited by 26 publications

(12 citation statements)

References 160 publications

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“…Although other membranes have less hydrophobic surfaces, practically yes, high contact angles (greater than 90°) are used. several techniques of modification, like the insertion of pore-forming substances [ 184 ], Inorganic nanoparticles and perfluorinated polymers were employed to enhance the hydrophobic characteristics and boost the water flux [ 185 ]. Simone et al [ 186 ] modified microporous hydrophobic fibrous PVDF membrane.…”

Section: Characteristics and Modifications Of Membranes Used For MDmentioning

confidence: 99%

Desalination technologies, membrane distillation, and electrospinning, an overview

Abid¹,

Wahab²,

Abdel-Salam³

et al. 2023

Heliyon

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Section: Characteristics and Modifications Of Membranes Used For MDmentioning

confidence: 99%

Desalination technologies, membrane distillation, and electrospinning, an overview

Abid¹,

Wahab²,

Abdel-Salam³

et al. 2023

Heliyon

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“…(Otero, Starinieri, and Charola, 2018). However, the treatment of stones with nanolime (as an inorganic material) has some limitations such as poor consolidation effect and hydrophilic characteristics, thus slightly improving the physicomechanical properties of the treated materials (Ershad Langroudi, Fadaei, and Ahmadi, 2019). In many cases, mixtures of two or more materials used in the stone consolidation achieve better results than the individual material by utilizing the specific advantages of each material (Dobrzynska-Musiela et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Nanolime-Based Mixtures for Treatment of Limestone Offering Table Excavated From Saqqara, Egypt: Analytical, Experimental and Applied Study

Hefni

2023

Shedet

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This paper represents an analytical, experimental and applied study of a limestone offering table, excavated from Saqqara in 2021. The studied limestone offering table was highly affected by damage associated with the burial environment such as subsurface water, salts and soiling. An analytical study was performed using a polarizing light microscope, X-ray diffractometer, scanning electron microscope and energy-dispersive X-ray spectrometer. The experimental study in this work aims to enhance the properties of nanolime in order to be successfully used in the consolidation of the limestone offering table. To achieve the main target of the study, experimental work was carried out including colour measurement, static contact angle, compression strength and morphological investigation. The results showed that the produced nanolime mixtures possess better properties than individual nanolime. The mixture of Calosil E5 + Megaprotec (silane and siloxane-based product) was considered the optimal mixture for the consolidation of the studied object. Finally, treatment was performed using mechanical and chemical cleaning, salt extraction and consolidation.

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“…[3][4][5][6] Especially, in order to combine the performances of fluorine and silicone, they are introduced into the molecular structure together by physical blending or chemical reaction. [7][8][9][10][11][12] From Alessandrini 13 to Ershad-Langroudi, 14 many researchers have verified the superiority of silicon-fluorinated acrylic polymers through theoretical research and practical exploration.…”

Section: Introductionmentioning

confidence: 99%

Weathering modification of acrylic emulsion by introducing UV absorbing groups

Lei

Zhou

Chen

et al. 2021

J of Applied Polymer Sci

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A new kind of UV‐absorbing silicon‐fluorinated acrylic emulsion was prepared by emulsion polymerization with 4‐allyloxy‐2‐hydroxybenzophenone, 3‐methacryloxypropyltrimethoxysilane (MPS) and hexafluorobutyl methacrylate (HFMA) as functional monomers. The emulsion and its coating were characterized by transmission electron microscope, Fourier transform infrared spectrum (FTIR), X‐ray photoelectron spectroscopy, ultraviolet absorption spectrum，thermo‐gravimetric analysis, water contact angle (CA), and artificial accelerated aging test. The results indicated that the emulsion with core‐shell structure was synthesized and showed prominent absorption peaks at 320 and 350 nm. The water CA of the coating was increased from 70.2° to 86.7° because of the incorporated HFMAs and MPSs. Both of the initial and final decomposition temperatures of the coating were increased by more than 20°C compared with those of the unmodified coating. After 10 days of accelerated aging, the color difference (ΔE) and rate of loss of gloss (ΔG) were only 2.78% and 5.22%, while those of the unmodified coating were as high as 22.94% and 78.57%, respectively. Because of the UV absorbers were incorporated by chemical reaction, the new coating had a more durable and effective anti‐ultraviolet performance compared with the coatings the UV absorbers were introduced by physical blending.

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Application of polymer coatings and nanoparticles in consolidation and hydrophobic treatment of stone monuments

Cited by 26 publications

References 160 publications

Desalination technologies, membrane distillation, and electrospinning, an overview

Desalination technologies, membrane distillation, and electrospinning, an overview

Nanolime-Based Mixtures for Treatment of Limestone Offering Table Excavated From Saqqara, Egypt: Analytical, Experimental and Applied Study

Weathering modification of acrylic emulsion by introducing UV absorbing groups

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