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Urea–formaldehyde microcapsules were prepared by in situ interfacial polymerization to lemon oil as the core material using four kinds of emulsifier, gelatin, span 80, polyvinyl alcohol, and sodium dodecyl sulfate. Urea–formaldehyde types were investigated for their effects on thermal properties, mean particle size, and size distributions. Thermal properties were studied using a dynamic DSC and TGA...
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