Les résultats expérimentaux obtenus par diffusion Raman basse fréquence et thermoporométrie sur la structure d'aérogels préparés en milieu basique sont présentés. Les dimensions des unités texturales -ou billes- et des mesopores sont déterminés. Les résultats sont en accord avec une structure fractale uniquement dans les unités texturales.Experimental results on the structure of base-catalysed aerogels obtained from low frequency Raman scattering and thermoporometry are presented. The size of textural units or beads and of mesopores are determined. These results are in agreement with a fractal structure only in the textural units
In the present work, aluminosilicate aerogels prepared under various conditions were compared with r...
Low frequency vibrational modes of silica aerogels have been investigated by Raman spectrometry. The...
Supercritical carbon dioxide is used to prepare aerogels of two reference molecular organogelators, ...
La diffusion des Rayons X aux petits angles et la microscopie électronique en transmission, sont uti...
International audienceSilica aerogels are known to be materials with exceptional characteristics, su...
The structural evolution of aerogels prepared from TEOS sono-hydrolysis was studied as a function of...
The structural properties of silica aerogels of various compositions and prepared in acidic, neutral...
Les mesures de diffusion élastique de neutrons aux petits angles montrent que les aérogels de silice...
International audienceAerogels are solids with exceptional characteristics, such as ultra-low densit...
Les propriétés vibrationnelles des aérogels de silice sont étudiées par spectrométrie Raman basse fr...
Structural properties of organic aerogels were studied by ultra-small-angle X-ray scattering (USAXS)...
Abstract-By destabilization of quasi-monodisperse silica sols, fractal clusters can be obtained. Sol...
Small angle X-ray scattering measurements on silica aerogels give systematically low values for the ...
Après avoir décrit la spectroscopie Brillouin sur les aérogels de silice, nous comparons nos résulta...
In the present work, aluminosilicate aerogels prepared under various conditions were compared with r...
In the present work, aluminosilicate aerogels prepared under various conditions were compared with r...
Low frequency vibrational modes of silica aerogels have been investigated by Raman spectrometry. The...
Supercritical carbon dioxide is used to prepare aerogels of two reference molecular organogelators, ...
La diffusion des Rayons X aux petits angles et la microscopie électronique en transmission, sont uti...
International audienceSilica aerogels are known to be materials with exceptional characteristics, su...
The structural evolution of aerogels prepared from TEOS sono-hydrolysis was studied as a function of...
The structural properties of silica aerogels of various compositions and prepared in acidic, neutral...
Les mesures de diffusion élastique de neutrons aux petits angles montrent que les aérogels de silice...
International audienceAerogels are solids with exceptional characteristics, such as ultra-low densit...
Les propriétés vibrationnelles des aérogels de silice sont étudiées par spectrométrie Raman basse fr...
Structural properties of organic aerogels were studied by ultra-small-angle X-ray scattering (USAXS)...
Abstract-By destabilization of quasi-monodisperse silica sols, fractal clusters can be obtained. Sol...
Small angle X-ray scattering measurements on silica aerogels give systematically low values for the ...
Après avoir décrit la spectroscopie Brillouin sur les aérogels de silice, nous comparons nos résulta...
In the present work, aluminosilicate aerogels prepared under various conditions were compared with r...
In the present work, aluminosilicate aerogels prepared under various conditions were compared with r...
Low frequency vibrational modes of silica aerogels have been investigated by Raman spectrometry. The...
Supercritical carbon dioxide is used to prepare aerogels of two reference molecular organogelators, ...