| 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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Uhlig, Kai
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2025Characterisation and modelling of the fibre-matrix interface of short fibre reinforced thermoplastics using the push-out technique
- 2024Design, simulation and experimental analysis of a monolithic bending section for enhanced maneuverability of single use laparoscopic devicescitations
- 2024Leaftronics: Natural lignocellulose scaffolds for sustainable electronicscitations
- 2024Anchoring fins of fully covered self-expandable metal stents affect pull-out force and stent migrationcitations
- 2023Characterization and model‐based mechanical analysis of moisture gradients in PA 6citations
- 2023Hygromechanical Behavior of Polyamide 6.6: Experiments and Modelingcitations
- 2023The crystallinity of chemically bonded PA-PTFE-oil compounds by X-ray diffraction and DSCcitations
- 2022On the Resin Transfer Molding (RTM) Infiltration of Fiber-Reinforced Composites Made by Tailored Fiber Placement
- 2022Chemically bonded PA-PTFE-oil compounds by reactive processingcitations
- 2020Structural optimization through biomimetic-inspired material-specific application of plant-based natural fiber-reinforced polymer composites (Nfrp) for future sustainable lightweight architecturecitations
- 2019Waviness and fiber volume content analysis in continuous carbon fiber reinforced plastics made by tailored fiber placementcitations
- 2018Beitrag zur Anwendung der Tailored Fiber Placement Technologie am Beispiel von Rotoren aus kohlenstofffaserverstärktem Epoxidharz für den Einsatz in Turbomolekularpumpen
Places of action
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article
The crystallinity of chemically bonded PA-PTFE-oil compounds by X-ray diffraction and DSC
Abstract
One of the major shortcomings of compounding polyamide (PA), polytetrafluoroethylene (PTFE), and olefinic oils is the fact that they are incompatible. To overcome this issue, using energy radiation in the presence of oxygen leads to the breakage of the PTFE chain to generate hydrophilic functional groups (COF, COOH) and peroxy radicals. The created functional groups and radicals can be used to induce a chemical bond between PA and PTFE as well as between PTFE and olefinic oil molecules. In addition, the hardness of compounds significantly influences the application of materials as solid-lubricant. It is well known that crystallinity affects the hardness of materials. In the presented study, the effects of the chemical bonding PA-PTFE/PA-PTFE-oil on the crystallization behavior of various types of PA in chemically bonded PA-PTFE-oil-chemically bonded compounds, which were prepared by reactive two-step extrusion, were investigated via DSC and X-ray diffraction. The crystallite size of PA46 and PA66 in PA-PTFE-chemically bonded (cb) compounds was significantly increased compared with pure PA. At the same time, the d-spacings of the PA segment in PA-PTFE compounds were significantly narrower. Due to the chemical coupling, the compounds showed a slight change in hardness compared with pure PA.