Effects of Molecular Chain Length on the Contact Line Movement in Water/n-Alkane/Solid Systems

Zheng, Wenxiu; Sun, Chengzhen; Wen, Boyao; Bai, Bofeng; Lichtfouse, Éric

doi:10.3390/polym11122081

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…[ 37 ] The surface hydroxyls cause strong interaction between water molecules and oxide, resulting in a high affinity of ZrO 2 coatings for water. [ 38 ] Therefore, the wetting of the zirconium‐oxide ceramic coatings is governed strictly by the wetting model first described by Wenzel, [ 39 ] which implies an increase in surface wetting proportionally to an increase in surface roughness due to the increased interface between liquid and solid. The measured water contact angle for the coatings prepared in this work is dependent on surface roughness, decreasing in the following order: nanostumps (34°) > nanomounds (29°) > nanopillars (18°).…”

Section: Resultsmentioning

confidence: 99%

Nanostructured Zirconium‐Oxide Bioceramic Coatings Derived from the Anodized Al/Zr Metal Layers

Fohlerová

Kamnev

Sepúlveda

et al. 2021

Adv Materials Inter

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the long-term stability and functionality of medical implants. The selection of a biomaterial is based on its physicochemical properties and the surrounding biological environment. In modern medicine, biomaterials are commonly utilized as fixatives, replacements, and bases for the reconstruction of osseous and dental tissue. [1] Besides the well-known metallic materials such as titanium and its alloys, stainless steel, niobium, tantalum, gold, or cobalt-chromium alloys, [2] the metal-oxide ceramics such as titania or zirconia have become indispensable in dental and bone tissue reconstruction, [3] including prostheses, osteogenic scaffolds, and medically implanted devices to deliver medication, monitor body functions, or provide support to organs and tissues. [4] The feasibility of biomaterials for in vitro applications strongly depends on their chemical composition, surface wettability, roughness, hardness, and stability. The differences in the surface morphology may significantly affect the adhesion and viability of living cells and bacteria, protein adsorption, or differentiation of stem cells and osteoblasts. [5] The precise control of surface topography and properties of a biomaterial is an essential factor for modulating its biological response.To date, several techniques have been developed to create biosurfaces with micro-and nanoscale topographies, striving to enhance the material's biocompatibility. [6] The mechanical roughening enables a random pattern of surface features with various amplitudes and spacings. [7] It is also possible to achieve well-defined and controlled surface features via diverse micro-and nanofabrication techniques such as photolithography, laser machining, or 3D printing. [8][9][10] Additionally, biocompatible surfaces with precisely modeled and controlled topographies at the nanoscale may be synthesized via self-organized electrochemical anodizing of metals. This has proved to be the technically simple, cost-effective, eco-friendly, and versatile approach for creating essential bioceramic materials, such as Al 2 O 3 , TiO 2 , and ZrO 2 , with nanoporous surface morphologies. [11][12][13][14] As an alternative to nanoporous ceramics, metal-oxide protrusions such as nanohillocks, nanopillars, or nanorods, upright-standing and highly aligned on substrates, with Here, zirconium-oxide ceramic coatings comprising arrays of 3D nanostructures are electrochemically synthesized, ranging in shape, size, spacing, and population density, termed as the nanomounds (ø≈65 nm), nanopillars (ø≈130 nm), and nanostumps (ø≈220 nm). The nanostructured coatings, alongside a flat ZrO 2 anodic film, are explored as a potential biomaterial in experiments with Saos-2 cells. All coatings reveal no cytotoxicity to living cells. The population density and spreading area of the cells, being the largest on the flat film, slightly decrease with increasing nanostructure dimensions. The cells progressively proliferate on all the surfaces, the nanomounds and, especially, nanopillars promoting the best viabilities and...

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Section: Resultsmentioning

confidence: 99%

Nanostructured Zirconium‐Oxide Bioceramic Coatings Derived from the Anodized Al/Zr Metal Layers

Fohlerová

Kamnev

Sepúlveda

et al. 2021

Adv Materials Inter

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“…It was observed that the encapsulation of SPIONs was possible for all single polymer particles, even though preferential partitioning of SPIONs was observed for Janus particles. The extent of hydrogen bonding between the water droplet and the surface of the respective polymers influences the contact angle (Figure S2, Supporting Information) . Stronger hydrogen bonding between PLGA and H 2 O reduces the surface tension within the water droplet and decreases contact angle.…”

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confidence: 99%

Hybrid Janus Microparticles Achieving Selective Encapsulation for Theranostic Applications via a Facile Solvent Emulsion Method

Lim

Poh

Loo

2018

Macromol. Rapid Commun.

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Anisotropic Janus particles composed of biocompatible polymers have been gaining considerable interest for biomedical applications. Here, the fabrication of hybrid Janus particles via a single‐step solvent emulsion technique, potentially for theranostic purposes, is shown. Through this technique, the selective encapsulation of therapeutic and diagnostic agents is streamlined into different “faces” of the Janus structure. This facile technique is used to seamlessly fabricate polymeric‐based hybrid Janus particles for theranostic applications with little complexity.

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Selection of the Lubricating Oil Components Based on the Molecular Adsorption Characteristics

Zheng,

Chen,

et al. 2024

J. Phys.: Conf. Ser.

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The adsorption characteristics of the lubricating oil near the solid surface play crucial roles in the lubricating performance. In this paper, the molecular dynamics simulation implemented by MS software was carried out to reveal the adsorption properties of different lubricants on Fe2O3 surfaces. Several kinds of lubricating oil molecules were employed, namely, n-eicosane, 2, 6, 11, 15-tetramethylhexadecane, 2-decyldecahydronaphthalene and tetradecylcyclohexane. The results show that 2, 6, 11, 15-tetramethylhexadecane and 2-decyldecahydronaphthalene are relatively more favorable as the lubricant components. This is because they both have relatively high adsorption density, low molecular diffusivity and large adsorption energy. These results can provide a theoretical basis for the selection of future lubricant components as well as lubricant performance enhancement for blending.

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Effects of Molecular Chain Length on the Contact Line Movement in Water/n-Alkane/Solid Systems

Cited by 5 publications

References 35 publications

Nanostructured Zirconium‐Oxide Bioceramic Coatings Derived from the Anodized Al/Zr Metal Layers

Nanostructured Zirconium‐Oxide Bioceramic Coatings Derived from the Anodized Al/Zr Metal Layers

Hybrid Janus Microparticles Achieving Selective Encapsulation for Theranostic Applications via a Facile Solvent Emulsion Method

Selection of the Lubricating Oil Components Based on the Molecular Adsorption Characteristics

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