Organosilicon films deposited in low-pressure plasma from hexamethyldisiloxane — A review

Freitas, Amanda S. M. de; Maciel, Cristiane C.; Rodrigues, Jéssica S.; Ribeiro, Rafael Parra; Delgado-Silva, Adriana O.; Rangel, Elidiane Cipriano

doi:10.1016/j.vacuum.2021.110556

Cited by 34 publications

(48 citation statements)

References 108 publications

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“…After deposition of the monomer on the leather samples, a decrease in the percentages of carbon and oxygen was observed, much more marked in nitrogen content. However, the silicon content increased significantly in all samples by more than 6% after increasing the deposition time from 180 to 720 s. These results confirmed that a silica-based coating is deposited on the leather surface by the oxygen depletion and total coating of the nitrogen groups of the leather provided by the amides that compose it [ 24 , 30 , 31 ].…”

Section: Resultssupporting

confidence: 64%

“…In the case of samples CC-6 and CC-12, the spectra are similar with a large peak of C-C/C-H bonds on the surface and with a small peak attributed to C-Si at 286.0 eV, due to the introduction of the methyl groups present in the HMDSO monomer after its atomic fragmentation, indicating a decrease of the surface oxidation and removing the polar character of the surface. This seems to confirm that the plasma exposure time for an effective deposition and formation of the HMDSO polymeric film could be longer than 180 s [ 24 , 52 , 53 , 54 , 55 ].…”

Section: Resultssupporting

confidence: 54%

“…One of the most studied organosilicon compounds as a hydrophobic plasma coating is hexamethyldisiloxane (HMDSO) because, in its plasma-excited state, it fragments and can generate silicon radicals and atoms of silicon, hydrogen, carbon and oxygen [ 24 , 25 ]. These are deposited on the surface of the treated material, leading to a strong interaction between them.…”

Section: Introductionmentioning

confidence: 99%

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Organosilicon-Based Plasma Nanocoating on Crust Leather for Water-Repellent Footwear

Ruzafa-Silvestre¹,

Juan-Fernández²,

Carbonell-Blasco³

et al. 2022

Materials

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In this study, functional nanocoatings for waterproof footwear leather materials were investigated by chemical plasma polymerization by implanting and depositing the organosilicon compound hexamethyldisiloxane (HMDSO) using a low-pressure plasma system. To this end, the effect of monomers on leather plasma deposition time was evaluated and both the resulting plasma polymers and the deposited leather samples were characterised using different experimental techniques, such as: Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). In addition, leather samples were tested by standard tests for color change, water resistance, surface wetting resistance and dynamic water contact angle (DWCA). The resulting polysiloxane polymers exhibited hydrophobic properties on leather. Furthermore, these chemical surface modifications created on the substrate can produce water repellent effects without altering the visual leather appearance and physical properties. Both plasma coating treatments and nanocoatings with developed water-repellency properties can be considered as a more sustainable, automated and less polluting alternative to chemical conventional processing that can be introduced into product-finishing processes in the footwear industry.

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Section: Resultssupporting

confidence: 64%

Section: Resultssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

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Organosilicon-Based Plasma Nanocoating on Crust Leather for Water-Repellent Footwear

Ruzafa-Silvestre¹,

Juan-Fernández²,

Carbonell-Blasco³

et al. 2022

Materials

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“…Film properties can largely be defined regarding hardness, density, porosity, and wettability, mainly depending on their residual organic (hydrocarbon) content. [7,8] While organic/inorganic multilayers of SiOx found applications in the packaging field acting as barrier coatings, [9] Plasma polymerized SiOx films have also been widely studied as low dielectric constant materials, compared to pure silica, for advanced electronic devices. [10] The crucial element and property in the decrease of the dielectric constant, is the incorporation of carbon and hydrogen in the silicon oxide network, leading to an intrinsic porosity of nanodimensional size in the material.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous SiOx plasma polymer films as carrier for liquid‐infused surfaces

Gergs

Monti

Gaiser

et al. 2022

Plasma Processes & Polymers

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Liquid-infused surfaces are based upon the infusion of a liquid phase into a porous solid material to induce slippery and repellent character. In this context, porous SiOx plasma polymer films represent a relevant candidate for a robust nanoporous carrier layer. Intermittent low-pressure plasma etching of O 2 /hexamethyldisiloxane-derived coatings is investigated to enhance the intrinsic porosity inherent to residual hydrocarbons in the silica matrix. Simulations of the resulting Si-O ring network structure using reactive molecular dynamics indicate formation of interconnected voids with Si-OH functionalized pore walls allowing water penetration with almost Fickian diffusive behavior. The corresponding porosity of up to 18%, well agreeing with simulations, Fourier-transform infrared spectroscopy, and ellipsometry measurements, was found to be suitable for the liquid infusion of polyethylene glycol molecules into about 80 nm thick SiOx films providing ongoing lubricating properties, thus revealing their suitability as liquid-infused surfaces.

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“…Compared to other organosilicon monomers, the hexamethyldisiloxane (HMDSO) is one of the most researched precursors for plasma polymerization deposition because it is nontoxic, has a low cost to manufacture, and has been recognized as providing barrier properties for impermeable coatings in many applications. 15 Vautrin-Ul et al 16 investigated the anticorrosion properties of plasma polymerized HMDSO films prepared using mixed precursor feeds of HMDSO and O 2 with different HMDSO/ O 2 ratios and showed that the best protection was achieved when the HMDSO/O 2 ratio was 4/1. Grundmeier et al 17 studied the barrier properties of the ppHMDSO films deposited under different pressure and deposition rate conditions.…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Plasma-Polymerized Hexamethyldisiloxane Thin Films: Role of Interelectrode Distance and Excellent Corrosion Resistance

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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In comparison to the more traditional anticorrosion thin film coatings, the plasma polymerization approach offered a more efficient, dry, and straightforward procedure that made it possible to create dense films of several hundred nanometers in thickness, which has potential applications in metallic implant materials. In this paper, large-scale plasma polymerized hexamethyldisiloxane (ppHMDSO) thin film coatings were deposited on stainless steel substrates at different electrode distances to improve their corrosion resistance. The physicochemical properties and corrosion resistance of the ppHMDSO thin films as prepared at different electrode distances were characterized and gauged utilizing various characterization means. The results indicate that decreasing electrode distance accelerates monomer fragmentation and increases the oxidation process. The deposition rate and roughness of the ppHMDSO films both decreased as the electrode distance increased, while the carbonaceous group and hydrophobicity of the films enhanced. The ppHMDSO film prepared at an electrode distance of 40 mm obtained excellent elastic recovery and wear resistance and had an improved corrosion resistance, resulting in a reduction of 75% of the original corrosion behavior against the corrosion in Hank’s solution. The resulting large-scale ppHMDSO thin film coatings can be further employed in implants for tissue engineering and biomaterials.

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Organosilicon films deposited in low-pressure plasma from hexamethyldisiloxane — A review

Cited by 34 publications

References 108 publications

Organosilicon-Based Plasma Nanocoating on Crust Leather for Water-Repellent Footwear

Organosilicon-Based Plasma Nanocoating on Crust Leather for Water-Repellent Footwear

Nanoporous SiOx plasma polymer films as carrier for liquid‐infused surfaces

Large-Scale Plasma-Polymerized Hexamethyldisiloxane Thin Films: Role of Interelectrode Distance and Excellent Corrosion Resistance

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