Stability of Octadecyltrimethoxysilane-Based Coatings on Aluminum Alloy Surface

Zhizhchenko, Alexey; Shabalina, Anastasiia V.; Aljulaih, Ali A.; Gurbatov, Stanislav; Kuchmizhak, Aleksandr; Iwamori, Satoru; Kulinich, Sergei A.

doi:10.3390/ma15051804

Cited by 39 publications

(9 citation statements)

References 55 publications

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“…However, this method may not be appropriate with other metals. For example, Kulinich et al [ 34 , 35 ] coated smooth aluminum surfaces with stearic acid. They found that upon long-term immersion in water, the aluminum surface with alkyl groups tended to gradually decay, which was caused by reactions with water.…”

Section: Resultsmentioning

confidence: 99%

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Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Sun

Wang

2022

Materials

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In this study, a superhydrophobic surface was constructed on a copper substrate through dealloying-forming and solution-immersion methods. The dealloying process for nanostructures on a copper surface involved the electrodeposition of zinc atoms, and the thermal alloying and chemical dealloying of zinc atoms. Then, a dealloyed copper surface was subsequently modified with low-surface-energy copper stearate to produce a superhydrophobic surface. Scanning electron microscopy, X-ray diffractometry, and Fourier transform infrared spectrometry were employed to characterize the morphological features and composition components of the surface in the fabrication process. The static contact angles of the copper surfaces were compared and evaluated based on various fabrication parameters, including electric current density, corrosive solution concentration, and nanostructures. The results indicated that a leaf-like copper stearate could be constructed through immersing a dealloyed copper plate into a 0.005 mol/L ethanol solution of stearic acid for 5 min. Nanostructures provided more attachment areas on the copper surface to facilitate the formation of copper stearate. The resulting as-prepared surface presented excellent superhydrophobic properties with a contact angle of over 156.5°, and showed the potential properties of non-sticking, self-cleaning, anti-corrosion, and stability. This study provides an efficient approach to fabricate superhydrophobic surfaces for engineering copper metals.

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Section: Resultsmentioning

confidence: 99%

“…However, this method may not be appropriate with other metals. For example, Kulinich et al [34,35] coated smooth aluminum surfaces with stearic acid. They found that upon The self-cleaning performance of the superhydrophobic surface was also investigated in this study.…”

Section: Applications Of the Superhydrophobic Surfacementioning

confidence: 99%

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Sun

Wang

2022

Materials

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“…Namely, in continuous contact with the sessile water droplet, the stability of the fluorooxysilane layer against the hydrolysis-induced desorption of fluorooxysilane molecules from the coating/water interface can be studied. As shown earlier [48,49], the hydrolysis of siloxane bonds in fluorosilanes may cause the desorption of the hydrophobic molecules from the coating, exposing the hydroxyl groups, which are prone to hydration. As a result of this process, the superhydrophobic/hydrophobic state degrades.…”

Section: Resultsmentioning

confidence: 74%

Durable Superhydrophobic Coatings on Tungsten Surface by Nanosecond Laser Ablation and Fluorooxysilane Modification

et al. 2022

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Tungsten is an attractive material for a variety of applications, from constructions in high-temperature vacuum furnaces to nontoxic shields for nuclear medicine, because of its distinctive properties, such as high thermal conductivity, high melting point, high hardness and high density. At the same time, the areas of the applicability of tungsten, to a large extent, are affected by the formation of surface oxides, which not only strongly reduce the mechanical properties, but are also prone to easily interacting with water. To alleviate this shortcoming, a series of superhydrophobic coatings for the tungsten surface was elaborated using the method of nanosecond laser treatment followed by chemical vapor deposition of hydrophobic fluorooxysilane molecules. It is shown that the durability of the fabricated coatings significantly depends on surface morphology and composition, which in turn can be effectively controlled by adjusting the parameters of the laser treatment. The coating prepared with optimized parameters had a contact angle of 172.1 ± 0.5° and roll-off angle of 1.5 ± 0.4°, and preserved their high superhydrophobic properties after being subjected to oscillated sand abrasion for 10 h, continuous contact with water droplets for more than 50 h, and to several cycles of the falling sand test.

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“…Previous research has reported the long-term stability of OTS surfaces during water immersion. It was demonstrated that the WCA of the tested surfaces slightly dropped during a month of suspension in DI water, indicating that their hydrophobicity was not altered . Furthermore, this aspect could be explored to study the potential application of the persistent inhibitory effect of the OTS-coated materials on bacteria under different conditions.…”

Section: Resultsmentioning

confidence: 99%

Preventing Static Biofilm Formation of Staphylococcus aureus on Different Types of Surfaces Using Microbubbles

Le,

Tran,

et al. 2024

Langmuir

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Bacterial fouling and biofilm formation on surfaces have been ongoing problems in real life as well as in the medical field. Different approaches have been taken to tackle the issues, from costly surface modification to antibiotic-delivering strategies. In this study, we examined the potential of using stabilized microbubbles (MBs) to shield against bacterial adhesion. Three types of surfaces were tested: hydrophilic glass (hydrophilic surface), neutral hydrophobic polystyrene (PS)-coated surfaces, and negatively charged hydrophobic octadecyltrichlorosilane (OTS)-coated surfaces. By evaluating the colony-forming unit (CFU) values from each surface, MBs stabilized by 0.05 mM SDS were shown to only produce significant reduction of Staphylococcus aureus adhesion on PS surfaces, up to 60.29 and 82.32% compared to no-MB PS surfaces, and no-MB uncoated surfaces, correspondingly, due to the appropriate size, stability, and negative charges of the MB shielding layer. On the other hand, OTS coatings had an intrinsic antiadhesion effect (69.83% compared to uncoated surface), given that the negatively charged OTS-aqueous interface or surface porosity nature of the coating prohibited the attachment of MBs, leading to the elimination of the antifouling effect of MBs. Ultimately, MBs gave better shielding results than surface modification when compared to uncoated surfaces and hence can be applied more widely.

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Stability of Octadecyltrimethoxysilane-Based Coatings on Aluminum Alloy Surface

Cited by 39 publications

References 55 publications

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Durable Superhydrophobic Coatings on Tungsten Surface by Nanosecond Laser Ablation and Fluorooxysilane Modification

Preventing Static Biofilm Formation of Staphylococcus aureus on Different Types of Surfaces Using Microbubbles

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