Graphene Oxide/Silver Nanoparticle Coating Produced by Electrophoretic Deposition Improved the Mechanical and Tribological Properties of NiTi Alloy for Biomedical Applications

2019 ◽  
Vol 19 (7) ◽  
pp. 3804-3810 ◽  
Author(s):  
Dinesh Rokaya ◽  
Viritpon Srimaneepong ◽  
Jiaqian Qin ◽  
Krisana Siraleartmukul ◽  
Vilailuck Siriwongrungson
Keyword(s):  
Graphene Oxide ◽  
Tribological Properties ◽  
Electrophoretic Deposition ◽  
Silver Nanoparticle ◽  
Biomedical Applications ◽  
Niti Alloy ◽  
Nanoparticle Coating ◽  
Mechanical And Tribological Properties

scholarly journals Biofilm inhibition and bactericidal activity of NiTi alloy coated with graphene oxide/silver nanoparticles via electrophoretic deposition

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sirapat Pipattanachat ◽  
Jiaqian Qin ◽  
Dinesh Rokaya ◽  
Panida Thanyasrisung ◽  
Viritpon Srimaneepong
Keyword(s):  
Surface Roughness ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Electrophoretic Deposition ◽  
Biofilm Formation ◽  
Niti Alloy ◽  
Surface Characteristics ◽  
Dependent Manner ◽  
Biofilm Inhibition ◽  
Coating Time

AbstractBiofilm formation on medical devices can induce complications. Graphene oxide/silver nanoparticles (GO/AgNPs) coated nickel-titanium (NiTi) alloy has been successfully produced. Therefore, the aim of this study was to determine the anti-bacterial and anti-biofilm effects of a GO/AgNPs coated NiTi alloy prepared by Electrophoretic deposition (EPD). GO/AgNPs were coated on NiTi alloy using various coating times. The surface characteristics of the coated NiTi alloy substrates were investigated and its anti-biofilm and anti-bacterial effect on Streptococcus mutans biofilm were determined by measuring the biofilm mass and the number of viable cells using a crystal violet assay and colony counting assay, respectively. The results showed that although the surface roughness increased in a coating time-dependent manner, there was no positive correlation between the surface roughness and the total biofilm mass. However, increased GO/AgNPs deposition produced by the increased coating time significantly reduced the number of viable bacteria in the biofilm (p < 0.05). Therefore, the GO/AgNPs on NiTi alloy have an antibacterial effect on the S. mutans biofilm. However, the increased surface roughness does not influence total biofilm mass formation (p = 0.993). Modifying the NiTi alloy surface using GO/AgNPs can be a promising coating to reduce the consequences of biofilm formation.

Improved mechanical and tribological properties of bismaleimide composites by surface-functionalized reduced graphene oxide and MoS2 coated with cyclotriphosphazene polymer

RSC Advances ◽  
2015 ◽  
Vol 5 (118) ◽  
pp. 97883-97890 ◽  
Author(s):  
Zhengyan Chen ◽  
Hongxia Yan ◽  
Tianye Liu ◽  
Song Niu ◽  
Jiayi Ma
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tribological Properties ◽  
Hybrid Nanoparticles ◽  
One Pot ◽  
Mechanical And Tribological Properties ◽  
Reduced Graphene

PZD/rGO/MoS2 hybrid nanoparticles were prepared by a one-pot noncovalent method, and then were incorporated into BMI resin as additive to fabricate PZD/rGO/MoS2/BMI composites.

Comparative Investigations on the Mechanical and Tribological Properties of Glass Fibre Reinforced Thermoplastic and Blended Graphene-Oxide Hybrid Thermoplastic Nanocomposites

2014 ◽  
Vol 591 ◽  
pp. 85-88 ◽  
Author(s):  
R. Geetha ◽  
Paulraj Jawahar
Keyword(s):  
Graphene Oxide ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Film Formation ◽  
Processing Temperature ◽  
Mechanical And Tribological Properties ◽  
Base Materials ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Glass Fibre Reinforced

Glass filled nylon composites (GFN) and hybrid graphene oxide reinforced glass filled Nylon nanocomposites (GO-GFN) are prepared by blending the required base materials in injection molding machine at processing temperature of 275°C. The specimens prepared are subjected to various mechanical property tests to reveal their hardness, tensile strength and flexural strength. The wear discs of GFN and GO-GFN composites as per ASTM standard are injection molded to analyze the tribological properties using pin on disc tribometer. The pin used is EN 8 Tool steel. The Coefficient of friction for the GFN composites for the wear load of 10 N is 0.28. Addition of 0.003 wt% GO to the GFN system has decreased the coefficient of friction significantly to the value of 0.12. The decrease in C.O.F was correlated with the adhesion film formation in the pin surface. This work confirms the improvement in wear resistance of GO-GFN system which is attributed by the presence of graphene oxide only.

SiO 2 ‐covered graphene oxide nanohybrids for in situ preparation of UHMWPE/GO(SiO 2 ) nanocomposites with superior mechanical and tribological properties

2019 ◽  
Vol 136 (31) ◽  
pp. 47796 ◽  
Author(s):  
Seyyed Arash Haddadi ◽  
Ahmad Ramazani Saadatabadi ◽  
Amanj Kheradmand ◽  
Majed Amini ◽  
Mohammad Ramezanzadeh
Keyword(s):  
Graphene Oxide ◽  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
In Situ Preparation

scholarly journals The Influence of Irradiation and Accelerated Aging on the Mechanical and Tribological Properties of the Graphene Oxide/Ultra-High-Molecular-Weight Polyethylene Nanocomposites

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Guodong Huang ◽  
Zifeng Ni ◽  
Guomei Chen ◽  
Yongwu Zhao
Keyword(s):  
Molecular Weight ◽  
Graphene Oxide ◽  
High Molecular Weight ◽  
Tribological Properties ◽  
Gamma Ray ◽  
Accelerated Aging ◽  
Artificial Joint ◽  
Promising Candidate ◽  
Mechanical And Tribological Properties ◽  
Ultra High Molecular Weight

Graphene oxide/ultra-high-molecular-weight polyethylene (GO/UHMWPE) nanocomposite is a potential and promising candidate for artificial joint applications. However, after irradiation and accelerated aging, the mechanical and tribological behaviors of the nanocomposites are still unclear and require further investigation. GO/UHMWPE nanocomposites were successfully fabricated using ultrasonication dispersion, ball-milling, and hot-pressing process. Then, the nanocomposites were irradiated by gamma ray at doses of 100 kGy. Finally, GO/UHMWPE nanocomposites underwent accelerated aging at 80°C for 21 days in air. The mechanical and tribological properties of GO/UHMWPE nanocomposites have been evaluated after irradiation and accelerated aging. The results indicated that the incorporation of GO could enhance the mechanical, wear, and antiscratch properties of UHMWPE. After irradiation, these properties could be further enhanced, compared to unirradiated ones. After accelerated aging, however, these properties have been significantly reduced when compared to unirradiated ones. Moreover, GO and irradiation can synergistically enhance these properties.

scholarly journals Interfacial modification of basalt fiber filling composites with graphene oxide and polydopamine for enhanced mechanical and tribological properties

RSC Advances ◽  
2018 ◽  
Vol 8 (22) ◽  
pp. 12222-12231 ◽  
Author(s):  
Junjie Wang ◽  
Shaofeng Zhou ◽  
Jin Huang ◽  
Guizhe Zhao ◽  
Yaqing Liu
Keyword(s):  
Graphene Oxide ◽  
Tribological Properties ◽  
Interfacial Adhesion ◽  
Basalt Fiber ◽  
Mechanical And Tribological Properties ◽  
Interfacial Modification

Graphene oxide was grafted onto the surface of basalt fiber via polydopamine to enhance the interfacial adhesion of PA6 composites.

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