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Article Dans Une Revue Langmuir Année : 2019

Toward the Formulation of Stable Micro and Nano Double Emulsions through a Silica Coating on Internal Water Droplets

Résumé

Delivery systems able to coencapsulate both hydrophilic and hydrophobic species are of great interest in both fundamental research and industrial applications. Water-inoil-in-water (w 1 /O/W 2) emulsions are interesting systems for this purpose, but they suffer from limited stability. In this study, we propose an innovative approach to stabilize double emulsions by the synthesis of a silica membrane at the water/oil interface of the primary emulsion (i.e., inner w 1 /O emulsion). This approach allows the formulation of stable double emulsions through a twostep process, enabling high encapsulation efficiencies of model hydrophilic dyes encapsulated in the internal droplets. This approach also decreases the scale of the double droplets up to the nanoscale, which is not possible without silica stabilization. Different formulation and processing parameters were explored in order to optimize the methodology. Physicochemical characterization was performed by dynamic light scattering, encapsulation efficiency measurements, release profiles, and optical and transmission electron microscopies.

Domaines

Matériaux
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Dates et versions

hal-03419839 , version 1 (12-11-2021)

Identifiants

Citer

Salman Akram, Xinyue Wang, Thierry F Vandamme, Mayeul Collot, Asad Ur Rehman, et al.. Toward the Formulation of Stable Micro and Nano Double Emulsions through a Silica Coating on Internal Water Droplets. Langmuir, 2019, 35 (6), pp.2313 - 2325. ⟨10.1021/acs.langmuir.8b03919⟩. ⟨hal-03419839⟩
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