Étude d'un procédé continu de microencapsulation basé sur un micromélangeur

Abstract : This study focuses on the influence of the hydrodynamic and mixing conditions on the characteristics of microcapsules obtained by inversion/precipitation. This process is classically run in semi-batch stirred tank while it has been shown that the performance of chemical product manufacturing processes can be improved by using microtechnologies due to better hydrodynamic control and intensification of mass and heat exchanges. Therefore, in order to evaluate the potential benefit of these new technologies, microcapsules of perfume in PMMA have been manufactured by phase inversion/precipitation (system THF/Water) in a classical semi-batch stirred tank, in a structured mixer and in a V-Type micromixer (FZK). The three process is evaluated in term of capsules properties (size distribution, membrane thickness, encapsulation efficiency and release rate). It is shown that micromixer offers a wide range of operating conditions
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Sophie Rabeau. Étude d'un procédé continu de microencapsulation basé sur un micromélangeur. Autre. Institut National Polytechnique de Lorraine, 2009. Français. ⟨NNT : 2009INPL096N⟩. ⟨tel-01748744⟩

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