| People | Locations | Statistics |
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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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Zekonyte, Jurgita
University of Portsmouth
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2022Investigating the Effects of H2O Interaction with Rainscreen Façade ACMs During Fire Exposurecitations
- 2021The effect of temperature on the erosion of polyurethane coatings for wind turbine leading edge protectioncitations
- 2021Wear of 17-4 PH stainless steel patterned surfaces fabricated using selective laser meltingcitations
- 2020Characterization of Nano-Mechanical, Surface and Thermal Properties of Hemp Fiber-Reinforced Polycaprolactone (HF/PCL) Biocompositescitations
- 2020Planning for metal additive manufacturingcitations
- 2020Structure and mechanical properties of Ce-La alloys containing 3- 10 wt. % Lacitations
- 2016Titanate nanotubes for reinforcement of a poly(ethylene oxide)/chitosan polymer matrixcitations
- 2016Titanate nanotubes for reinforcement of a poly(ethylene oxide)/chitosan polymer matrixcitations
- 2016Titanate nanotubes for reinforcement of a poly(ethylene oxide)/chitosan polymer matrixcitations
- 2015Friction force microscopy analysis of self-adaptive W-S-C coatings: nanoscale friction and wearcitations
- 2015Friction force microscopy analysis of self-adaptive W-S-C coatings:nanoscale friction and wearcitations
- 2015Friction force microscopy analysis of self-adaptive W-S-C coatingscitations
- 2014Nanomechanical assessment of human and murine collagen fibrils via atomic force microscopy cantilever-based nanoindentationcitations
- 2014WS2 nanoparticles - potential replacement for ZDDP and friction modifier additivescitations
- 2014Frictional properties of self-adaptive chromium doped tungsten-sulfur-carbon coatings at nanoscalecitations
- 2009Angle resolved XPS characterization of cationic polyacrylamidescitations
- 2006Defect formation and transport in La0.95Ni0.5Ti0.5O3-δcitations
- 2005Interfacial effects on the electrical properties of multiferroic BiFeO3/Pt/Si thin film heterostructurescitations
- 2005Tailoring of the PS surface with low energy ionscitations
- 2004Structural and chemical surface modification of polymers by low-energy ions and influence on nucleation, growth and adhesion of noble metals
- 2003Etching rate and structural modification of polymer films during low energy ion irradiationcitations
- 2003Mechanisms of argon ion-beam surface modification of polystyrenecitations
Places of action
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booksection
Structural and chemical surface modification of polymers by low-energy ions and influence on nucleation, growth and adhesion of noble metals
Abstract
Changes in physical and chemical properties of a polymer film can be induced by exposing it to a variety of surface modification techniques, one of which is low-energy ion-beam treatment, which allows to induce changes on the polymer surface without affecting the bulk. Using XPS and TEM, polystyrene (PS) and polypropylene (PP) surfaces were examined after 1 keV energy ion-beam treatments in the ion fluence range from 10<sup>12</sup> to 10<sup>16</sup> cm<sup>-2</sup> in order to clarify the following points: identification of adsorption-relevant species for metal atoms, formation of crosslinks in the outermost polymer layer, effect of post-treatment reaction after exposure to atmosphere and the influence of Ar<sup>+ </sup>and O<sub>2</sub><sup>+</sup> ion bombardments on the condensation coefficient of metals, as well as on the enhancement of adhesion strength. The ion bombardment altered the polymer surface chemical structure by introducing new functional groups which influenced metal/polymer interaction. The increase in the PS surface glass transition temperature is explained in terms of an enhanced degree of crosslinking in the outermost polymer surface layer, which is also the reason for the etch rate reduction. The ion bombardment created a defined concentration of defects which acted as new adsorption sites on polymer surfaces, leading to an increase in the cluster density of metals with ion fluence and the enhancement in the condensation coefficient, which approached unity at an ion fluence of 10<sup>15</sup> cm<sup>-2</sup>. The surface treatments improved the adhesion between the metal and the polymer by two orders of magnitude compared to the untreated polymer. The locus of failure changed from interfacial failure for untreated polymer surfaces to cohesive failure in the polymer for modified surfaces.