| 초록 |
This study deals with the preparation and characterization of encapsulated phase change material (PCM, octadecane) as a core material with polystyrene as a shell material. Encapsulated octadecane particles were prepared by miniemulsion polymerization using alkali-soluble resin (SAA, EAA) that composes of hydrophobic and hydrophilic segments as a polymeric emulsifier. Especially, alkali-soluble resin could endows a carboxyl functionality on the shell of PCM capsules and effets both steric stabilization and electrical stabilization for particle formation. The distribution of particle size and the morphology of encapsulated PCM were analyzed by a capillary hydrodynamic fractionation (CHDF) and a scanning electron microscope (SEM) respectively. In addition, Thermal energy storage/release capacity and properties of PCM capsules were measured by differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA) respectively. |
