| 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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Becker-Willinger, Carsten
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2011Morphology controlled preparation of monodisperse TiO2 nanorods and nanoparticles for optical nanocomposites
- 2010Micro-patternable hybrid nanocomposites with tailorable mechanical and thermomechanical propertiescitations
- 2010Sol–Gel Derived Nanocomposites for Optical Applicationscitations
- 2010Monitoring morphology and properties of hybrid organic-inorganic materials from in situ polymerization of tetraethoxysilane in polyimide polymer : 1. effect of the coupling agent on the microstructure and interfacial interaction
- 2010New routes to cleanliness : nanocomposite coatings offer advantages over PTFE in food production
- 2009Nanocomposite materials for high frequency ultrasound matching layerscitations
- 2007Investigation on thermal and chemical stability of polymer based easy-to-clean nanocomposite systems
- 2006Monitoring morphology and properties of hybrid organicinorganic materials from in situ polymerization of tetraethoxysilane in polyimide polymer: 1. Effect of the coupling agent on the microstructure and interfacial interactioncitations
- 2003Corrosion performance of heavy metal free inorganic-organic nanocomposite coating systems on aluminium synthesized by sol-gel processing
- 2002Easy to clean nanocomposite metal coatings for food processing
- 2002Antimicrobic low surface-free energy nanocomposite coatings
Places of action
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article
Monitoring morphology and properties of hybrid organicinorganic materials from in situ polymerization of tetraethoxysilane in polyimide polymer: 1. Effect of the coupling agent on the microstructure and interfacial interaction
Abstract
<jats:title>Abstract</jats:title><jats:p>Transmission electron microscopy (TEM), small angle X-ray (SAXS) and dynamical mechanical thermal analysis (DMTA) were used to characterize the morphology and thermo-mechanical properties of hybrid organic inorganic materials. These materials were based on polyimide (PI) and tetraethoxysilane (TEOS). Polyimide polymer is prepared from 4,4’-oxydianiline (ODA) 2,2-Bis(3- amino-4-hydroxyphenyl) hexafluoro-propane (6F-OHDA) pyromellitic dianhydride (PMDA) polyamic polymer. In one family of hybrid materials 3- isocyanatopropyltriethoxysilane (ICTS) is used as coupling agent in order to enhance the interfacial interaction between polyimide and silica. It was possible to modulate the morphology as well as the optical and thermo-mechanical properties of these hybrid materials depending on the formulation used. TEM and SAXS analysis indicated that silica domains on the nanoscale level are obtained when coupling agent is used in the formulation. Additionally the TEM and SAXS analysis indicated that miscibility of the organic and the inorganic phases on the molecular scale is obtained in the hybrid films when ICTS as coupling agent is added to the polyamic acid. These techniques show a fractal structure of the hybrid materials with coupling agent. This was confirmed with DMTA analysis which shows very high temperature relaxation (more than 450°C). From this result it could be derived that the addition of ICTS causes a morphological transformation from discrete particulate microstructure to fine interpenetrated or co-continuous phases. The intimate miscibility of the phases is accompanied at the same time by the amelioration of thermo-mechanical properties of the hybrid films.</jats:p>