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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Bowen, James
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (51/51 displayed)
- 2024Manufacture and calibration of high stiffness AFM cantilevers
- 2021Plug and play nanoparticles: functionalization of octa-alkyne silsesquioxane nanocages
- 2021Continuous hydrothermal flow synthesis of S-functionalised carbon quantum dots for enhanced oil recoverycitations
- 2021Manufacture and calibration of high stiffness AFM cantilevers
- 2021Nanoscale tribology over large displacements
- 2020Manufacture and calibration of high stiffness AFM cantilevers
- 2020A Microwave Heating Demonstrator (MHD) payload concept for lunar construction and volatiles extraction
- 2019Precise generation of selective surface-confined glycoprotein recognition sitescitations
- 2019Suitability of developed composite materials for meniscal replacement: mechanical, friction and wear evaluationcitations
- 2019Microwave heating experiment of lunar simulant (JSC-1A) using a bespoke industrial microwave apparatus
- 2018Twisting fatigue in multilayer films of Ag-alloy with indium tin oxide on polyethylene terephthalate for flexible electronics devicescitations
- 2017Liquid-like behaviour of gold nanowire bridgescitations
- 2017Gallium (III)-metalloporphyrin grafted magnetite nanoparticles for fluoride removal from aqueous solutionscitations
- 2017Microparticle surface layering through dry coating: impact of moisture content and process parameters on the properties of orally disintegrating tabletscitations
- 2017Confirmation of a Nanohybrid Shish-Kebab (NHSK) Structure in Composites of PET and MWCNTscitations
- 2017The formation of a nanohybrid shish-kebab (NHSK) structure in melt-processed composites of poly (ethylene terephthalate) (PET) and multi-walled carbon nanotubes (MWCNTs)citations
- 2016Spin-on-carbon hard masks utilising fullerene derivativescitations
- 2016On the origin and magnitude of surface stresses due to metal nanofilmscitations
- 2015In vitro performance of dye-loaded microsphere-based controlled release technologies synthesized via electrospray atomization
- 2015Failure behaviour of AZO/Ag/AZO multilayers on PEN substrates for flexible electronic devices
- 2015Nano-hydroxyapatite deposition on titanium using peptide aptamers
- 2015Functionalization of biomedical surfaces by peptide aptamers
- 2015The effects of corrosion, fatigue and fatigue corrosion on ITO/Ag/ITO-coated polymer substrates used in solar cell applications
- 2015Multiscale patterning of nanocomposite polyelectrolyte/nanoparticle films using inkjet printing and AFM scratchingcitations
- 2015Electrospray synthesis of PLGA TIPS microspheres
- 2015High temperature reliability of power module substrates
- 2014Transient bioimpedance monitoring of mechanotransduction in artificial tissue during indentationcitations
- 2014Pixel spacing effects for nanofabrication using focused ion beam
- 2013NEMS based tactile sensing in an artificial finger
- 2013Development of a synovial fluid analogue with bio-relevant rheology for wear testing of orthopaedic implantscitations
- 2013Structural changes to resorbable calcium phosphate bioceramic aged <i>in vitro</i>citations
- 2013Spherical indentation analysis of stress relaxation for thin film viscoelastic materialscitations
- 2013Degradation of polymer filmscitations
- 2013Active screen plasma nitriding enhances cell attachment to polymer surfacescitations
- 2013Nitrogen plasma surface modification enhances cellular compatibility of aluminosilicate glasscitations
- 2012Dielectric properties of pulsed-laser deposited indium tin oxide thin filmscitations
- 2012Surface functionalisation of silicon-substituted apatite xerogels
- 2012Manufacturing of agarose-based chromatographic adsorbents – effect of ionic strength and cooling conditions on particle structure and mechanical strengthcitations
- 2012Manufacturing of agarose-based chromatographic adsorbents with controlled pore and particle sizes
- 2011Residual stress analysis of all perovskite oxide cantileverscitations
- 2011Manufacturing of agarose-based chromatographic adsorbents with controlled pore and particle size
- 2011Characteristics and durability of fluoropolymer thin filmscitations
- 2011Micro-stereolithography (MSL) employing a polymer/magnetite nanocomposite for digital manufacturing of functional flow sensors
- 2011A miniature flow sensor fabricated by micro-stereolithography employing a magnetite/acrylic nanocomposite resincitations
- 2010Effect of active screen plasma nitriding on the biocompatibility of UHMWPE surfaces
- 2010Microstructure and dielectric function modelling by spectroscopic ellipsometry and energy electron loss spectroscopy of In<sub>2</sub>O<sub>3</sub>:Sn thin films
- 2010Effect of plasma surface modification on the biocompatibility of UHMWPEcitations
- 2010Matching the nano- to the meso-scale: measuring deposit–surface interactions with atomic force microscopy and micromanipulationcitations
- 2009Structural, electrical and optical properties of Si-doped ZnO thin films grown by pulsed laser deposition
- 2009Microstructure–property relationships in thin film ITOcitations
- 2009Surface modification of silicon substituted apatite
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document
Effect of active screen plasma nitriding on the biocompatibility of UHMWPE surfaces
Abstract
Active screen plasma nitriding (ASPN) is used to chemically modify the surface of UHMWPE. This is an unexplored and new area of research. ASPN allows the homogeneous treatment of any shape or surface at low temperature; therefore, it was thought that ASPN would be an effective technique to modify organic polymer surfaces. ASPN experiments were carried out at 120 °C using a dc plasma nitriding unit with a 25% N(2) and 75% H(2) atmosphere at 2.5 mbar of pressure. UHMWPE samples treated for different time periods were characterized by nanoindentation, FTIR, XPS, interferometry and SEM. A 3T3 fibroblast cell line was used for in vitro cell culture experiments. Nanoindentation of UHMWPE showed that hardness and elastic modulus increased with ASPN treatment compared to the untreated material. FTIR spectra did not show significant differences between the untreated and treated samples; however, some changes were observed at 30 min of treatment in the range of 1500-1700 cm(-1) associated mainly with the presence of N-H groups. XPS studies showed that nitrogen was present on the surface and its amount increased with treatment time. Interferometry showed that no significant changes were observed on the surfaces after the treatment. Finally, cell culture experiments and SEM showed that fibroblasts attached and proliferated to a greater extent on the plasma-treated surfaces leading to the conclusion that ASPN surface treatment can potentially significantly improve the biocompatibility behaviour of polymeric materials