693.932 PEOPLE
| 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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Nysten, Bernard
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (54/54 displayed)
- 2024Influence of physical ageing and fibre proximity on the local mechanical response of the Elium® thermoplastic composite matrixcitations
- 2023Accurate determination of stiffness and strength of graphene via AFM-based membrane deflectioncitations
- 2022Integrated Approach to Eco-Friendly Thermoplastic Composites Based on Chemically Recycled PET Co-Polymers Reinforced with Treated Banana Fibrescitations
- 2022Ion Partition Detected in Homeopathically Manufactured Medicine Cuprum metallicum and Controlscitations
- 2021Nanomechanics serving polymer-based composite researchcitations
- 2019Spatial resolution and property contrast in local mechanical mapping of polymer blends using AFM dynamic force spectroscopycitations
- 2019A quantitative determination of the polymerization of benzoxazine thin coatings by timeâ€ofâ€flight secondary ion mass spectrometrycitations
- 2019Graphene effect on mechanical response of copper film
- 2019A quantitative determination of the polymerization of benzoxazine thin coatings by time‐of‐flight secondary ion mass spectrometrycitations
- 2018Characterization and modeling of the ageing of polymers in contact to fluids using nanomechanical probes
- 2018Specific core-shell approaches and related properties in nanostructured ferroelectric ceramicscitations
- 2018Specific core-shell approaches and related properties in nanostructured ferroelectric ceramicscitations
- 2018Specific core-shell approaches and related properties in nanostructured ferroelectric ceramicscitations
- 2018Hybrid gate dielectrics: a comparative study between polyvinyl alcohol/SiO2 nanocomposite and pure polyvinyl alcohol thin-film transistorscitations
- 2018Influence of Heat Treatments on Microstructure and Magnetic Domains in Duplex Stainless Steel S31803citations
- 2018A benzoxazine/substituted borazine composite coating: A new resin for improving the corrosion resistance of the pristine benzoxazine coating applied on aluminumcitations
- 2017Cross-linking degree of benzoxazine thin coatings determined by ToF-SIMS
- 2016Synergistic local toughening of high performance epoxy-matrix composites using blended block copolymer-thermoplastic thin filmscitations
- 2016Growth and toxic gas sensing properties of poly(urethaneimide) thin filmscitations
- 2015Field-effect memory transistors based on arrays of nanowires of a ferroelectric polymer
- 2015Fracture mechanics based analysis of the scratch resistance of thin brittle coatings on a soft interlayercitations
- 2015Surface electrical properties of stainless steel fibres: An AFM-based studycitations
- 2014Fracture toughness measurement of ultra-thin hard films deposited on a polymercitations
- 2014The Ferro- to Paraelectric Curie Transition of a Strongly Confined Ferroelectric Polymercitations
- 2013Electronic properties of dioctylterthiophene-based organic thin-film transistors: A Kelvin probe force microscopy studycitations
- 2012New insight into the "depth of cure" of dimethacrylate-based dental compositescitations
- 2012Optimization of the structural parameters of new potentiometric pH and urea sensors based on polyaniline and a polysaccharide coupling layercitations
- 2012Metal condensates for low-molecular-weight matrix-free laser desorption/ionizationcitations
- 2011Influence of nanoparticle–polymer interactions on the apparent migration behaviour of carbon nanotubes in an immiscible polymer blendcitations
- 2011Melting and van der Waals Stabilization of PE Single Crystals Grown from Ultrathin Filmscitations
- 2011Influence of nanoparticle–polymer interactions on the apparent migration behaviour of carbon nanotubes in an immiscible polymer blendcitations
- 2010pH and Enzymatic Sensors Based on Nanostructured Conductive Polymer Films
- 2010Bidimensional Response Maps of Adaptive Thermo- and pH-Responsive Polymer Brushescitations
- 2009In situ detection of porosity initiation during aluminum thin film anodizingcitations
- 2008Structural and magnetic characterization of a carburized cast austenitic steelcitations
- 2007Nanomechanics with the atomic force microscope on polymer surfaces, interfaces and nano-materials
- 2007Scanning Probe Microscopies : Principles and Applications to Micro- and Nano-Fiberscitations
- 2005Multitechnique characterization of thin films of immiscible polymer systems: PS-b-PMMA diblock copolymers and PS-PMMA symmetric blendscitations
- 2005Partial dewetting of polyethylene thin films on rough silicon dioxide surfaces.citations
- 2005Elastic modulus of nanomaterials: resonant contact-AFM measurement and reduced-size effects (invited lecture)citations
- 2004Surface tension effect on the mechanical properties of nanomaterials measured by atomic force microscopycitations
- 2004Atomic Force Microscopies and Polymer Blends : Principles and Applications to Surfaces and Interfaces (invited lecture)
- 2004Difference in the annealing behaviour of thin films of PS/PMMA blends and copolymers as revealed by ToF-SIMS and AFMcitations
- 2003Image analysis of transmission electron micrographs of semicrystalline polymers: a comparison with X-ray scattering resultscitations
- 2003Physical properties of conducting polymer nanofiberscitations
- 2003Measurement of elastic modulus of nanotubes by resonant contact atomic force microscopycitations
- 2003Spinodal-like dewetting of thermodynamically-stable thin polymer films.citations
- 2003Size effect on the elastic modulus of nanomaterials as measured by resonant contact atomic force microscopy
- 2001Characterization of the molecular structure of two highly isotactic polypropylenescitations
- 2001Chemical recognition of antioxidants and UV-light stabilizers at the surface of polypropylene: Atomic force microscopy with chemically modified tipscitations
- 2001Chemical Recognition of Antioxidants and UV-light Stabilizers on the Surface of Polypropylene : Atomic Force Microscopy with Chemically Modified Tipscitations
- 2000PEEK oligomers as physical model compounds for the polymer. 4. Lamellar microstructure and chain dynamics.citations
- 2000Elastic modulus of polypyrrole nanotubescitations
- 2000Nano-structured polymer blends: phase structure, crystallisation behaviour and semi-crystalline morphology of phase separated binary blends of poly(ethylene oxide) and poly(ether sulphone)citations
Places of action
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article
PEEK oligomers as physical model compounds for the polymer. 4. Lamellar microstructure and chain dynamics.
Abstract
Crystals of monodisperse linear poly(oxy-1,4-phenyleneoxy-1,4-phenylenecarbonyl-1,4-phenylene) (PEEK) oligomers have been reinvestigated by wide-angle and small-angle X-ray scattering and atomic force microscopy (AFM). For the shorter oligomer investigated (containing six phenyl groups), a correlated packing of the chains is observed in the direction of the chain axis, with the formation of crystals being much thicker than the oligomer extended chain length. This results from the alignment of chain ends in planes, as revealed by AFM. A crystal structure is proposed for this oligomer, consistent with both AFM and X-ray diffractometry results. By contrast, the longer oligomer (containing 12 phenyl groups) presents a crystalline morphology consisting of stacks of atomically uncorrelated thin lamellar crystals, whose thicknesses are about the extended chain length computed for the oligomer. This is due to random staggering of the chains along their axes in the crystals, as suggested previously. CP/MAS C-13 solid-state NMR proton spin-lattice relaxation experiments reveal that these morphological differences induce variations in the chain dynamics of the oligomers and confirm that only the longer oligomer can be taken as a good model for a isolated crystal phase. From this study, reference values at room temperature are proposed for the specific mass of a perfect PEEK crystal [1.412(1) g.cm(-3)] and for the proton spin-lattice relaxation time of such a crystal [3.6(2) s].