Superhydrophobicity of polymer films via fluorine atoms covalent attachment and surface nano-texturing

Zha, Jinlong; Ali, Sahal Saad; Peyroux, Jérémy; Batisse, Nicolas; Claves, Daniel; Dubois, Marc; Kharitonov, A. P.; Monier, Guillaume; Darmanin, Thierry; Guittard, Frédéric; Алексейко, Л. Н.

doi:10.1016/j.jfluchem.2017.06.011

Cited by 18 publications

(18 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The nanotube that formed after running the anodic oxidation process for 45 min and without heat treatment exhibited the biggest contact angle in water (140°) compared to the 47° value obtained for the polished surface or the one of 109° for the nanotubes obtained at 15 V and with heat treatment (Figure 3). Nanotubular morphology and the fluorine content are considered two factors that increase the surface´s hydrophobic nature [29][30][31][32][33]. Contact angles substantially increase for the nanotube surface; the layers with large contact angles display hydrophobic properties.…”

Section: Resultsmentioning

confidence: 99%

Influence of Heat Treatment and UV Irradiation on the Wettability of Ti35Nb10Ta Nanotubes

Lario¹,

Fombuena²,

Vicente³

et al. 2018

Metals

View full text Add to dashboard Cite

Abstract:The implant osseointegration rate depends on the surface's topography and chemical composition. There is a growing interest in the anodic oxidation process to obtain an oxide layer with a nanotube morphology on beta titanium alloys. This surface treatment presents large surface area, nanoscale rugosity and electrochemical properties that may increase the biocompatibility and osseointegration rate in titanium implants. In this work, an anodic oxidation process was used to modify the surface on the Ti35Nb10Ta alloy to obtain a titanium nanotubes topography. The work focused on analyzing the influence of some variables (voltage, heat treatment and ultraviolet irradiation) on the wettability performance of a titanium alloy. The morphology of the nanotubes surfaces was studied by Field Emission Scanning Electron Microscopy (FESEM), and surface composition was analyzed by Energy Dispersive Spectroscopy (EDS). The measurement of contact angle for the TiO 2 nanotube surfaces was measured by a video contact angle system. The surface with the non photoinduced nanotubes presented the largest contact angles. The post-heat treatment lowered the F/Ti ratio in the nanotubes and decreased the contact angle. Ultraviolet (UV) irradiation of the TiO 2 nanotubes decrease the water contact angle.

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of Heat Treatment and UV Irradiation on the Wettability of Ti35Nb10Ta Nanotubes

Lario¹,

Fombuena²,

Vicente³

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…The corresponding atomic concentrations for the untreated and treated PVC are presented in Table 2 (which also shows the binding energies). PVC is composed of about (50 at.%) carbon, (38 at.%) chlorine and few percent hydrogen [9,16] . As hydrogen is not detected by XPS, the atomic concentrations obtained for the untreated PVC are consistent.…”

Section: Composition (Xps Analysis)mentioning

confidence: 99%

“…Nevertheless, the presence of fluorinated groups (CF, CF2 and CF3) and the subsequent surface energy decrease are not enough to reach superhydrophobicity [5] . Flat surfaces terminated with -CF3 groups, which have the lowest free energy, exhibit a maximum contact angle of around 120º [16] . On the other hand, when nitrogen ions were implanted into the surface of PVC, the oxygen content increased, from 11 at.% to 33 at.%.…”

Section: Composition (Xps Analysis)mentioning

confidence: 99%

See 1 more Smart Citation

Surface functionalization of polyvinyl chloride by plasma immersion techniques

et al. 2020

View full text Add to dashboard Cite

In this work we discuss the wettability, chemical composition, surface morphology and optical transmittance of polyvinyl chloride (PVC) samples treated by Plasma Immersion and by Plasma Immersion Ion Implantation. The total pressure of N2 or SF6 was 6.66 Pa, for treatments of 900 s, applied rf power of 25 and 100 W, and the substrate temperature was about 298 K. In PIII, high voltage pulses of -2400 V at a cycle time of 30 µs and a frequency of 300 Hz were used. The wettability of the samples was assessed via contact angle measurements, which indicated either hydrophilicity or hydrophobicity, depending on the plasma composition. X-ray Photoelectron Spectroscopic analysis confirmed strong fluorine attachment to the surface after treatments using SF6 plasmas, and the presence of oxygen after treatments using nitrogen plasmas. Atomic Force Microscopy images showed that the roughness Rrms, depends on the plasma conditions. Optical transmittance in the visible region, T (λ), was increased by plasma immersion. The greatest contact angle observed was 142º (PI cathode), while the highest roughness was 213.2 nm. The highest optical transmittance in the visible region was around to 90% (PI anode).

show abstract

“…Además, los enlaces titanio-flúor (Ti-F) están polarizados debido a la alta electronegatividad del flúor, lo que les otorga un momento dipolar permanente. Las superficies nanotubulares de óxido de titanio no fotoactivadas presentan el mismo comportamiento que los polímeros, es decir, superficies micro/nano texturizadas, que con la presencia de átomos de flúor generan superficies super-hidrofóbicas (Zha et al, 2017). Por lo tanto, el anodizado electroquímico sin tratamiento térmico reduce la mojabilidad de la superficie, debido a un incremento del ángulo de contacto en todos los líquidos empleados en este estudio.…”

Section: Mojabilidad De Los Tratamientos Superficialesunclassified

Influencia de la morfología nanotubular en la mojabilidad y ángulo de contacto de las aleaciones Ti6Al4V ELI

et al. 2018

View full text Add to dashboard Cite

La tasa de osteointegración de los implantes, entre otros factores, depende de la topografía y de la composición química de la superficie, así como de las interacciones entre la superficie del implante y las células. Con el objetivo de evaluar esta interacción, el presente trabajo evalúa la energía superficial de tres acabados superficiales a partir de la medición del ángulo de contacto. En cuanto al acabado superficial de nanotubos se ha llevado a cabo un tratamiento térmico para evaluar la influencia de este proceso en la reducción del contenido de flúor. El objetivo de este estudio es evaluar la influencia de la morfología y composición de la superficie en la mojabilidad de la aleación. La medición del ángulo de contacto se realizó empleando un goniómetro óptico. La microscopía electrónica de barrido de emisión de campo (FESEM) ha permitido realizar un estudio del diámetro y espesor de los nanotubos. El análisis de espectrometría de dispersión de energía de rayos X (EDS) se empleó para analizar la composición superficial. Como resultados, destacar que la energía superficial de los nanotubos no fotoinducidos es superior a las superficies desbastadas o grabadas con ácido. Por lo tanto, el tratamiento térmico permite reducir la ratio F/Ti en los nanotubos, reduciendo así, el ángulo de contacto e incrementando la energía superficial de los nanotubos con lo que la interacción de superficies se mejora.

show abstract

Superhydrophobicity of polymer films via fluorine atoms covalent attachment and surface nano-texturing

Cited by 18 publications

References 61 publications

Influence of Heat Treatment and UV Irradiation on the Wettability of Ti35Nb10Ta Nanotubes

Influence of Heat Treatment and UV Irradiation on the Wettability of Ti35Nb10Ta Nanotubes

Surface functionalization of polyvinyl chloride by plasma immersion techniques

Influencia de la morfología nanotubular en la mojabilidad y ángulo de contacto de las aleaciones Ti6Al4V ELI

Contact Info

Product

Resources

About