Influence of Process Parameters on the Precipitation of Organic Nanoparticles by Drowning-Out

Ethylcellulose (the organic substance), ethanol (the solvent) and water (the nonsolvent) are chosen as a model system for the production of uniform nanoparticles by drowning-out. Experiments carried out under various operating conditions show that many process parameters, such as the type of stirrer...

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Veröffentlicht in:Chemical engineering research & design 1997-02, Vol.75 (2), p.237-244
Hauptverfasser: Plasari, E., Grisoni, P.H., Villermaux, J.
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creator Plasari, E.
Grisoni, P.H.
Villermaux, J.
description Ethylcellulose (the organic substance), ethanol (the solvent) and water (the nonsolvent) are chosen as a model system for the production of uniform nanoparticles by drowning-out. Experiments carried out under various operating conditions show that many process parameters, such as the type of stirrer and the stirring speed, the temperature and the solvent–nonsolvent ratio, have practically no influence on the formation of ethylcellulose particles. On the other hand, the ethylcellulose concentration in the initial alcoholic solution seems to be the most important parameter controlling the particle size distribution. A comparison is made between experimental results and predictions of classical nucleation theories or aggregative growth models.
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source Elsevier ScienceDirect Journals
subjects Applied sciences
Chemical engineering
Crystallization, leaching, miscellaneous separations
drowning-out
ethylcellulose
Exact sciences and technology
nanoparticles
precipitation
process parameters
title Influence of Process Parameters on the Precipitation of Organic Nanoparticles by Drowning-Out
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