Hydrophobization of Inorganic Materials by Chemical Modification of the Surface

Лисичкин, Г. В.; Olenin, A. Yu.

doi:10.1134/s1070427220010012

Cited by 6 publications

(3 citation statements)

References 73 publications

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“…Silicon dioxide is widely known for its application in various fields of industry, medicine, and scientific research connected with the role of silica in nature, its high biocompatibility and its chemical stability. Free silanol groups (Si-OH) on the surface of silica can interact with various inorganic and organic compounds, imparting desired functional properties to materials [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. The number of publications in the scientific press devoted to silica surface modification mechanisms and the use of modified silica materials in various fields of chemistry and medicine are growing every year.…”

Section: Introductionmentioning

confidence: 99%

“…A specific fundamental and practical interest of researchers is dedicated to the preparation of superhydrophobic surfaces with a water contact angle of more than 150° [ 1 ]. Such materials, due to their self-cleaning ability, can be used for protection from various contaminants; for sorption processes, biologically active substances including oleophilic compounds; for solving environmental problems, such as the separation of water-oil emulsions, etc.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Hydrophobic Nanosized Silicon Dioxide with a Spherical Particle Shape and Its Application in Fire-Extinguishing Powder Compositions Based on Struvite

et al. 2023

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Textural and morphological features of hydrophobic silicon dioxide, obtained by the hydrolysis of tetraethoxysilane in an ammonia medium followed by modification of a spherical SiO2 particles surface with a hydrophobic polymethylhydrosiloxane, were studied in this work. The size of silicon dioxide particles was controlled during preparation based on the Stöber process by variation of the amount of water (mol) in relation to other components. The ratio of components, synthesis time and amount of the hydrophobizing agent were determined to obtain superhydrophobic monodisperse silicon dioxide with a spherical particle size of 50–400 nm and a contact angle of more than 150°. In the case of the struvite example, it was demonstrated that the application of spherical- shaped hydrophobic silicon dioxide particles in powder compounds significantly improves the flowability of crystalline hydrates. The functional additive based on the developed silicon dioxide particles makes it possible to implement the use of crystalline hydrates in fire-extinguishing powders, preventing agglomeration and caking processes. The high fire-extinguishing efficiency of the powder composition based on struvite and the developed functional additive has been proven by using thermal analysis methods (TGA/DSC).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Hydrophobic Nanosized Silicon Dioxide with a Spherical Particle Shape and Its Application in Fire-Extinguishing Powder Compositions Based on Struvite

et al. 2023

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“…At the same time, the SBA-15 surface is hydrophilic, thus the surface of such porous substances must be hydrophobized to form the working fluids of high-load damping systems. Methyltriethoxysilane and methyltrichlorosilane were used as surface modifiers by two methods to obtain materials with different degrees of surface hydrophobization [10].…”

mentioning

confidence: 99%

Influence of the Structure of Hydrophobic Porous Silica Materials of SBA-15 Type and Polymethylsiloxane Derivatives on the Value of Water Intrusion Pressure

et al. 2021

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A series of silica mesoporous molecular sieves SBA-15 with a 7.7 0.8 nm pore diameter, the surface of which is hydrophobized with methylsilyl groups, and polymethylsiloxane derivatives with a 1.6 0.8 nm pore diameter were obtained. These sieves are characterized by X-ray phase analysis, adsorption of nitrogen at 77 K and water at 293 K, as well as IR spectroscopy. It is established that there is a significant resistance to water intrusion (absorption) only in the case of substances characterized by the nitrogen adsorption potential value 0 6.4 kJ/mol. The studied systems can be used as "molecular springs" in shock load damping devices due to their functional properties.

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PVA –Bismuth zirconium oxide nanocomposites using BSA protein: Properties and their applications to WLEDs, anti-counterfeiting and forensic fields

Kalburgi

Prasad²,

Lavanya

et al. 2022

Chemical Physics

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Hydrophobization of Inorganic Materials by Chemical Modification of the Surface

Cited by 6 publications

References 73 publications

Synthesis of Hydrophobic Nanosized Silicon Dioxide with a Spherical Particle Shape and Its Application in Fire-Extinguishing Powder Compositions Based on Struvite

Synthesis of Hydrophobic Nanosized Silicon Dioxide with a Spherical Particle Shape and Its Application in Fire-Extinguishing Powder Compositions Based on Struvite

Influence of the Structure of Hydrophobic Porous Silica Materials of SBA-15 Type and Polymethylsiloxane Derivatives on the Value of Water Intrusion Pressure

PVA –Bismuth zirconium oxide nanocomposites using BSA protein: Properties and their applications to WLEDs, anti-counterfeiting and forensic fields

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