Abstract
The present study focused on using microencapsulation technique to develop an antioxidant and antibacterial active smart cotton fabric using encapsulated lime oil (LO). LO microcapsules were prepared via the complex coacervation method using chitosan and gum arabic wall materials. UV-Visible and FTIR spectrometry verified the successful encapsulation of LO. The synthesized LO microcapsules were irregular in shape and differed in size between 15-160 μm according to the optical and SEM images. The loading of the microcapsules was found to be 2943 ± 128 μL/g with a loading efficiency of 82 ± 4%. The antioxidant activity of the LO microcapsules was 1336 ± 17 μg PGE/g (Folin-Ciocalteu assay). Brine shrimp lethality assay indicated that the cytotoxicity of LO was minimized upon microencapsulation. Succinic acid was used as the binder to incorporate the LO microcapsules on to the cotton fabric. The SEM images confirmed the steady attachment of LO microcapsules to the cotton fibres. The cotton fabric containing LO microcapsules displayed significant antibacterial activity against four bacterial species prior to and after subjecting the fabric to wash conditions.
Highlights
The enhancement of the quality and standards of life styles of people expands with the gradual improvement of the medicinal and technological knowledge
It can be concluded that lime oil was successfully encapsulated in the prepared microcapsules and the encapsulated oil can be released upon mechanical crushing of the microcapsule wall
Lime oil microcapsules were successfully prepared via the complex coacervation method using gum arabic and chitosan wall materials
Summary
The enhancement of the quality and standards of life styles of people expands with the gradual improvement of the medicinal and technological knowledge. Among the wide range of microencapsulation methods in use, the most often used ones in the textile industry are the coacervation and interfacial polymerization methods.[7] During this research, complex coacervation method was selected to synthesize lime oil microcapsules, using gum arabic and chitosan as the wall materials. After the characterization of synthesized lime oil microcapsules, the main focus of this research was to successfully apply the lime oil microcapsules on to a cotton fabric using succinic acid as the binder.[19]
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