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KMID : 1094720060110050391
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Biotechnology and Bioprocess Engineering
2006 Volume.11 No. 5 p.391 ~ p.395
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Factors affecting the characteristics of melamine resin microcapsules containing fragrant oils
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Hwang Jun-Seok
Kim Jin-Nam
Wee Young-Jung
Jang Hong-Gi
Kim Sun-Ho
Ryu Hwa-Won
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Abstract
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Microcapsules containing fragrant oils as a core material were prepared byin situ polymerization, using melamine-formaldehyde prepolymer as the wall material. The several parameters, such as stirring times, stirring rates, emulsifier types, emulsifier concentrations, and the viscosity of the core materials, affect the characteristics of the microcapsules. These parameters were investigated by the analyses of microcapsule size, particle size distribution, and morphology. The average microcapsule size decreased with an increase in stirring time, stirring rate, emulsifier concentration, and viscosity of the core material. It was also found that poly(vinyl alcohol) as a protective colloid could enhance the stability of the melamine-formaldehyde microcapsules.
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KEYWORD
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emulsifier, fragrant oil, in situ polymerization, melamine-formaldehyde, microcapsule
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