Journal
CELLULOSE
Volume 27, Issue 7, Pages 4109-4121Publisher
SPRINGER
DOI: 10.1007/s10570-020-03010-2
Keywords
Microencapsulation; Cellulose derivatives; Eugenol; Control release; Textile functionalization
Funding
- FEDER through COMPETE 2020, under PT2020 [POCI-01-0247-FEDER-003472]
- Portuguese Science Foundation (FCT) [SFRH-BPD-73367-2010]
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This work reports studies on the production of eugenol-loaded microspheres by solvent evaporation method, targeted for incorporation into textile substrates, using different cellulose derivatives: ethyl cellulose, cellulose acetate (CA), cellulose butyrate acetate, and cellulose acetate phthalate. The microspheres were evaluated in terms of size, shape, thermal stability, encapsulation efficiency, and eugenol kinetics release. CA-based microspheres proved to be the best, thus being selected for subsequent experiments. Comparable properties of the CA-based microspheres were achieved ongoing from 100 mL to higher batch volumes (up to 2000 mL). The eugenol-loaded microspheres were successfully incorporated into cotton fabrics using a padding technique, confirmed by FE-SEM. Eugenol release profiles from the impregnated textiles demonstrated a slow and controlled release (less than 20% of the encapsulated amount over 90 days). The developed microspheres demonstrated to be the most promising for the retention and protection of hydrophobic active compounds for possible textile applications. [GRAPHICS] .
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