| 초록 |
Microencapsules are fine particles whose size ranges from 50nm to 2,000um, composed of polymeric shell and active core component. Microencapsulation of phase-change material (PCM) has been studied extensively because PCMs can absorb, store, and release thermal energy as their physical state changes. Size of microcapsule using miniemulsion can be smaller than 1um. Miniemulsion is generally consist of oil, water, surfactant, and cosurfactant that is very in-soluble in the water. In the miniemulsion, oil droplets are stable even though the size is smaller than 1um due to cosurfactant. In this work, poly (methyl methacrylate) was used for encapsulation of octadecane. The size of the obtained nanoparticles measured by dynamic light scattering. |
