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Preparation and Release Behaviors of Chitosan Microcapsules Containing Fragrant Oil  

Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Lee, Yun-Mok (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Publication Information
Korean Chemical Engineering Research / v.43, no.4, 2005 , pp. 511-516 More about this Journal
Abstract
In this work, the crosslinked-chitosan microcapsules containing fragrant oil were prepared by oil-in-water-in-oil (O/W/O) multi-emulsion method. The effects of concentration of fragrant oil and stirring rates on the preparing of the microcapsules were investigated. The diameter and form of the microcapsules were observed by scanning electron microscope (SEM). As a result, the average particle size of microcapsules was decreased with increasing the stirring rate. The formation of chitosan microcapsules was comfirmed by FT-IR. The inclusion of fragrant oil into chitosan microcapsules was determined in the presence of specific peak of fragrant oil, i.e., $1,460cm^{-1}$, $2,960cm^{-1}$. Also, the release behavior or profile of fragrant oil from chitosan microcapsules was examined with UV/vis spectra. Released amounts of fragrant oil were increased with increasing as the content of fragrant oil and decreasing the pH.
Keywords
Microscapsule; Chitosan; Fragrant Oil; Oil-in-Water-in-Oil Mult- Emulsion Method;
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Times Cited By KSCI : 1  (Citation Analysis)
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