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Nanoparticules d'amidon : préparation, pouvoir renforçant et utilisation comme agent de stabilisation

Abstract : The present work investigates a new process "top-down" of producing a starch nanoparticlesbased on the use of ultrasound as a means of physical disintegration. An extensivecharacterization using dynamic light scattering (DLS), Filed-effect scanning electronicmicroscopy (FE-SEM), and structural analysis (XRD, Raman and SAXS) shows that this wassuccessful in producing nanosized starch particles with platelet-like morphology. Theparticles produced were used as a Pickering stabilizer in the emulsion polymerization ofacrylic nanocomposite. The nanocomposite dispersion was characterized using dynamic lightscattering, ζ-potential measurement, transmission electron microscopy (TEM) and FE-SEM.A clear correlation between the particle size of the polymer particles and the content of thestarch nanoparticles was shown.The properties of the nanocomposite film prepared by casting and film-formation bycoalescence at room temperature were investigated using dynamic mechanical analysis andUV-Visible spectroscopy.
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https://tel.archives-ouvertes.fr/tel-01213056
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Submitted on : Wednesday, October 7, 2015 - 4:54:19 PM
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  • HAL Id : tel-01213056, version 1

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Sihem Ben Haj. Nanoparticules d'amidon : préparation, pouvoir renforçant et utilisation comme agent de stabilisation. Génie des procédés. Université de Sfax. Faculté des sciences, 2015. Français. ⟨NNT : 2015GREAI027⟩. ⟨tel-01213056⟩

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