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Preparation of microcapsule for citriodiol controled release

Marjana Simonič orcid.org/0009-0009-7015-296X ; Sveučilište u Mariboru, Fakultet za kemijsku tehnologiju, Maribor, Slovenija
Julija Volmajer Valh orcid.org/0000-0001-7048-1311

Sažetak

The purpose of the research was the preparation of environmentally friendly
ethyl cellulose microparticles encapsulating citriodiol as model volatile
compound. Microcapsules were synthesized by homogenizing the organic
solution (ethyl cellulose, ethyl acetate, citriodiol) and aqueous solution with
surfactant. The resulting microcapsules were characterized by the
determination of the polydispersity index, the particle size distribution, the
zeta potential and microscopic observations. The size of the resulting
microcapsules strongly depended on the method of stirring while adding the
organic solution into the aqueous solution. It was found that the microcapsules
must be prepared using homogenizer in order to gain uniform shapes. The
polydispersity index determination confirmed that homogenization enables
midrange monodispersed sample. If magnetic stirrer was used the
microcapsules’ size distribution was broader. The zeta potential measured
around - 40 mV confirmed stable microcapsules. The ATR FTIR spectra of
citriodiol, ethyl cellulose and the resulting micro capsules were also studied.
As well as by microscopic measurements the presence of the active
component captured inside the microcapsules was confirmed. In the future
work the appropriate control method of the citriodiol release from
microcapsules has to be provided.

Ključne riječi

microcapsule; citriodiole; ethyl cellulose; controlled release

Hrčak ID:

305980

URI

https://hrcak.srce.hr/305980

Datum izdavanja:

14.11.2021.

Posjeta: 115 *