Electrochemical characterization of nanostructured Ag:TiN thin films produced by glancing angle deposition on polyurethane substrates for bio-electrode applications

Pedrosa, Paulo; Machado, Diogo; Fiedler, Patrique; Vasconcelos, Beatriz; Alves, E.; Barradas, N.P.; Martin, Nicolas; Haueisen, Jens; Vaz, F.; Fonseca, C.

doi:10.1016/j.jelechem.2016.03.005

Cited by 13 publications

(5 citation statements)

References 88 publications

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“…and (311) planes characteristics of rock-salt (face cubic centred) structure as has been reported on previous works about this system [30,[39][40][41][42][43][44]. Also, a Ti peak was noticed from (002) plane according the pattern no.…”

Section: Structural Analysissupporting

confidence: 74%

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Castro

Carneiro

Marques

et al. 2020

Surface and Coatings Technology

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Additive manufacturing (AM) is a hot topic nowadays, having a first order in importance in research trends, improving existent technologies and carrying them further. AM can be applied to ceramics, which have importance in current technologies. Their capability to maintain functional properties for long time periods, combined with the easiness to process and the abundance of raw materials, make them a fundamental part of mankind development. Within ceramics, stoneware has a wide range of uses but in some conditions, it can be affected by biofouling. Ti(O)N and Ag-Ti(O)N coatings over 3D printed stoneware, were presented as multifunctional solution, linking aesthetical and antimicrobial properties. Films were developed by reactive direct current (DC) magnetron sputtering and characterized physical, chemical and morphologically, as well as regarding their colour variation. Moreover roughness, wettability, antibacterial and antibiofouling were also evaluated. The results revealed that the Ag doped coatings (with or without oxygen addition) had an enhanced multifunctionality compared to control samples (without Ag). Ag nanoparticles addition created a surface with potential antibacterial and antibiofouling activities, in order to resist outdoors and aqueous environments, making these films able to be applied in architectural pieces as sculptures or other decorative parts, maintaining their properties with good aesthetical properties. implants, soft tissue replacements, drug deliveries, among others [2]; aerospace industry, in reduced volume parts and replacements parts for aircraft with advanced materials as aluminium alloys, titanium alloys, nickel super-alloys and special steels; automotive industry, in the development of some structural and engine parts; and tooling industry, like moulds with complex refrigeration systems enabling better performances and higher life time, [3]. Additive manufacturing, namely with metals and polymers, is no longer the future, it is the unavoidable present, but the additive manufacture of ceramic materials is still far from the desired maturity. Abundance, easy manipulation, low cost, heat resistance and long life time span are the main characteristics of ceramics [4] and across human history, new technologies have enlarged its uses. Chemically, ceramics can be considered as compounds formed between metallic and non-metallic elements with predominant ionic bonding but having a

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Section: Structural Analysissupporting

confidence: 74%

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Castro

Carneiro

Marques

et al. 2020

Surface and Coatings Technology

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“…Polyurethane possesses exceptional qualities such as remarkable high elasticity, low-temperature flexibility, superior wear resistance, and impressive mechanical strength, thereby being extensively utilized in numerous fields including construction, automobile, electronics, medical, among others. [1][2][3][4][5] However, when polyurethane is solidified with moisture from the air, CO 2 is emitted, thereby causing the adhesive layer to foam, consequently impeding its functionality. [6] Hence, a practical way of avoiding this issue is to modify the polyurethane through the reaction with silane to generate silane-modified polyurethane (SPU) chains that attach to the NCO groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of hydroxyl silane coupling agent and its application in preparation of silane‐modified polyurethane

Guo

Shangguan

Liu

et al. 2023

Polymer Engineering & Sci

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This study describes the synthesis of a hydroxyl silane coupling agent (HO‐silane) through a click reaction between SH in 3‐(trimethoxysilyl)propane‐1‐thiol (KH‐590) and CC in 2‐hydroxyethyl methacrylate (HEMA). This coupling agent was subsequently employed in the synthesis of silane‐modified polyurethane (SPU) resin which could be moisture‐cured at room temperature. The influence of r values (the molar ratio of NCO and OH) on the characteristics of SPU resins was investigated. These results reveal that an increase in the r value leads to a reduction in viscosity from 4.9 × 105 to 1.9 × 105 mPa·s, a rise in tensile strength from 0.88 to 0.98 Mpa followed by a decline to 0.69 MPa, and a reduction in extension at fracture from 236% to 94%. A SPU resin with a viscosity of approximately 3.6 × 105 mPa·s, tensile strength of 0.98 MPa, and elongation at break of 218% can be produced when the r value is 1.8. In addition, a silane‐modified polyurethane (MS) sealant with a tensile strength of 1.6 MPa in addition to elongation at break at 336% could be produced using the aforementioned SPU resin.

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“…This could be particularly useful to fight bacteria during the initial stages of post-surgery recovery when the biological environment surrounding the newly implanted device is highly susceptible to infection and complications thereafter. Ag doping has also been studied extensively with other mechanically superior Ti-based material systems like TiN [26][27][28][29][30][31] and TiO [24,[32][33][34][35][36][37] to enhance their antimicrobial and bactericidal properties. Pedrosa et al [28], explored the effect of increasing Ag atomic concentration in a TiN matrix, from 0 to 100% and observed a marked variation in open circuit potential (OCP) with grain size variation brought by addition of Ag in the TiN matrix.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical and biocompatibility performance of Ti(1-)Ag(x) coatings through intermetallic phase modification

Lukose

Chavignon

Mantso

et al. 2022

Materials Characterization

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Electrochemical characterization of nanostructured Ag:TiN thin films produced by glancing angle deposition on polyurethane substrates for bio-electrode applications

Cited by 13 publications

References 88 publications

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Synthesis of hydroxyl silane coupling agent and its application in preparation of silane‐modified polyurethane

Enhanced mechanical and biocompatibility performance of Ti(1-)Ag(x) coatings through intermetallic phase modification

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