Continuous supercritical CO2 emulsion extraction (SEE-C) technology is proposed for the first time to test the encapsulation of two fatty acids: Stearic acid and isopropyl myristate, to be used as model Phase Change Ma-terials (PCM) in a PMMA shell. Spherical microcapsules with smooth surface and a mean diameter between 163-431 nm have been produced. Encapsulation efficiencies larger than those in the literature and up to a max of 91 % were measured. Therefore, supercritical PCM encapsulation can open new perspectives in thermal energy storage application.
Testing the encapsulation of phase change materials using supercritical emulsion extraction
Palazzo, Ida;Reverchon, Ernesto
2023-01-01
Abstract
Continuous supercritical CO2 emulsion extraction (SEE-C) technology is proposed for the first time to test the encapsulation of two fatty acids: Stearic acid and isopropyl myristate, to be used as model Phase Change Ma-terials (PCM) in a PMMA shell. Spherical microcapsules with smooth surface and a mean diameter between 163-431 nm have been produced. Encapsulation efficiencies larger than those in the literature and up to a max of 91 % were measured. Therefore, supercritical PCM encapsulation can open new perspectives in thermal energy storage application.File in questo prodotto:
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