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, une augmentation du rapport I2/I3 de 0, p.6

, Le greffage dans la microporosité peut être négligé lors de la modélisation des données de diffusion des rayons X aux petits angles. Références (1) Gouze, B.; Cambedouzou, J.; Parrès-maynadié, S.; Rébiscoul, D. Microporous and Mesoporous Materials How Hexagonal Mesoporous Silica Evolves in Water on Short and Long Term : Role of Pore Size and Silica Wall Porosity, Cette valeur est plutôt faible ce qui indique que si le greffage effectué dans les micropores augmente la densité de la silice, le rapport I2/I3 variera peu, p.183, 2014.

D. Le-greffage, AEAPTMS a été effectué sur des SBA-15 de 62 Å en utilisant plusieurs durées de greffage : 1h30 et 3h30

, Au niveau des spectres infrarouges des échantillons présentés sur la Figure 5 des diminutions d'intensité des bandes attribuées à vO-H et ?H2O probablement à l'effet du séchage engendré par le procédé CO2 supercritique. De plus, des signaux de faible intensité à 1400 cm -1 et, pp.2970-2971

, attribués à ?CH2 et vC-H attestent de la présence de l'alcoxysilane dans l'échantillon AEA-1h30. Annexes