Effects of gamma-irradiation on UHMWPE/MWNT nanocomposites

Martínez-Morlanes, M.J.; Castell, Pere; Martínez-Nogués, Vanesa; Martı́nez, M.T.; Alonso, Pablo J.; Puértolas, J.A.

doi:10.1016/j.compscitech.2010.11.013

Cited by 120 publications

(72 citation statements)

References 51 publications

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“…A uniform dispersion of GO sheets, without affecting its internal structure, was achieved at a mixing speed of 400 rev min 21 . This optimisation is in concordance with a study performed by Martinez-Morlanes et al, 7 where a UHMWPE/MWCNT composite mixture was prepared in a ball mill for 2 h at 400 rev min 21 . However, it is important to bear in mind that the optimised mixing speed must be adjusted according to the specifications of the individual ball mill equipment, since the characteristics of the grinding jar and the balls used during the process are of great importance.…”

Section: Discussionsupporting

confidence: 56%

“…5 In addition, multiwalled carbon nanotubes (MWCNTs) have been added as a reinforcing component for UHMWPE. 6,7 MWCNTs have excellent mechanical properties such as high tensile strength and are ultra-light weight, 8 which makes them an attractive alternative for reinforcing polyethylene. More recently, graphene has generated great interest as reinforcement for polymer matrices due to its excellent in-plane strength and high surface area, which might lead to enhanced load transfer sites between the polymeric matrix and reinforcement.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of graphene oxide as reinforcement for orthopaedic applications

Suñer

Emami

2014

Tribology - Materials, Surfaces & Interfaces

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Carbon based polymer composites have been suggested as an alternative to conventional ultra high molecular weight polyethylene (UHMWPE) in total joint replacements. The aim of this study was to investigate the use of graphene oxide (GO) as reinforcement of UHMWPE. Under optimised mixing conditions, the prepared UHMWPE/GO composite showed an enhanced thermal stability compared to conventional UHMWPE. Also, the present study has shown the potential of ball milling as a processing method for synthesising UHMWPE/GO composites to be used in load bearing implants.

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Section: Discussionsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Investigation of graphene oxide as reinforcement for orthopaedic applications

Suñer

Emami

2014

Tribology - Materials, Surfaces & Interfaces

View full text Add to dashboard Cite

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“…The crystallinity (X C ) was determined based on the heat fusion of the sample and the heat fusion of 100% PE (280.5 J/g) [32]. Compared with that of the non-irradiated sample, the X C of the irradiated samples increased as the irradiation dose increased, which is consistent with the results obtained by Puértolas et al [24,33]. The degradation process (via oxygen) was more likely to occur at low and medium doses in air, favoring oxidative chain scission as oxygen molecules react with free radicals, these new short chains tended to re-crystallization due to the higher mobility.…”

Section: Irradiation Effect On the Microstructures Of The Compositessupporting

confidence: 62%

Effect of γ-ray irradiation on the microstructure and self-heating property of carbon fiber/polyethylene composite films

Tang

Zhang

Chen

et al. 2015

Composites Part A: Applied Science and Manufacturing

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“…A study performed by Todd et al [21], reported up to a 9 % decrease in crystallinity for a thermally reduced graphite oxide reinforced polyethylene composite compared to virgin polyethylene. Martinez-Morlanes et al [22] also reported a lower crystallinity for multi-walled carbon nanotube reinforced UHMWPE. On the other hand, a higher degree of crystallinity due to the addition of graphene has been reported [20].…”

Section: Discussionmentioning

confidence: 98%

Ultra high molecular weight polyethylene/graphene oxide nanocomposites: Thermal, mechanical and wettability characterisation

Suñer

Joffe

Tipper

et al. 2015

Composites Part B: Engineering

102

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Ultra high molecular weight polyethylene (UHMWPE) is the material most commonly used among hard-on-soft bearings in artificial joints. However, the eventual failure of joint implants has been directly related to the wear and oxidation resistance of UHMWPE. The development of novel materials with improved wear and oxidative characteristics has generated great interest in the orthopaedic community and numerous carbon nanostructures have been investigated in the last years due to their excellent mechanical properties.The effect of the addition of GO nanoparticles to UHMWPE and the optimal %wt GO addition were investigated. UHMWPE/GO nanocomposites with different GO wt% contents were prepared and their mechanical, thermal, structural and wettability properties were investigated and compared with virgin UHMWPE.The results showed that the thermal stability, oxidative resistance, mechanical properties and wettability properties of UHMWPE were enhanced due to the addition of GO. UHMWPE/GO materials prepared with up to 0.5 wt% GO exhibited improved characteristics compared to virgin UHMWPE and nanocomposites prepared with higher GO contents. These findings suggest that GO nanoparticles might be an interesting reinforcing material for their use in orthopaedic applications, and more research concerning the biocompatibility and tribological performance of this material is currently under investigation.

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Effects of gamma-irradiation on UHMWPE/MWNT nanocomposites

Cited by 120 publications

References 51 publications

Investigation of graphene oxide as reinforcement for orthopaedic applications

Investigation of graphene oxide as reinforcement for orthopaedic applications

Effect of γ-ray irradiation on the microstructure and self-heating property of carbon fiber/polyethylene composite films

Ultra high molecular weight polyethylene/graphene oxide nanocomposites: Thermal, mechanical and wettability characterisation

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