Microencapsulation by Phase Inversion Precipitation

Authored by: Ricard Garcia-Valls , Cinta Panisello

Handbook of Encapsulation and Controlled Release

Print publication date:  November  2015
Online publication date:  December  2015

Print ISBN: 9781482232325
eBook ISBN: 9781482232349
Adobe ISBN:


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One of the possible methods for microcapsules production is phase inversion precipitation. This technique requires the preparation of microdroplets of the solved polymer containing the core materials. The microdroplets are then precipitated due to the presence of a nonsolvent for the polymer. In this chapter, we will describe the technique by using as example the production of polysulfone microcapsules by sprays and phase inversion precipitation in two modes, liquid and vapor nonsolvent media.

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