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Slow drying of a spray of nanoparticles dispersion. In situ SAXS investigation

D. Sen O. Spalla Olivier Taché P. Haltebourg A. Thill 1, *
* Corresponding author
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : Nanoparticles confined in droplets of less than a picoliter are forced to organize in submicronic dry grains through solvent evaporation. The evolution of structures of the grains and the constituent nanoparticles during the slow drying process are investigated in situ with small-angle X-ray scattering (SAXS) for the first time. The scattering results have been explained on the basis of the equilibrium thermodynamics of the droplets in the drying tube. We demonstrate that this technique is really efficient in describing the internal arrangement of the nanoparticles inside the drying droplets. Distinction between an almost homogeneous repartition of the nanoparticles in droplets and formation of core shell like particles even in strongly polydispersed droplets can be made using SAXS.
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https://hal-cea.archives-ouvertes.fr/cea-00260171
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Submitted on : Monday, March 3, 2008 - 2:11:06 PM
Last modification on : Monday, February 10, 2020 - 6:12:47 PM

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D. Sen, O. Spalla, Olivier Taché, P. Haltebourg, A. Thill. Slow drying of a spray of nanoparticles dispersion. In situ SAXS investigation. Langmuir, American Chemical Society, 2007, 23 (8), pp.4296-4302. ⟨10.1021/la063245j⟩. ⟨cea-00260171⟩

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