| 초록 |
Nanostructured polymer materials have been interested from many researchers for their various applications such as core-shell materials, biological materials, and nanocoating etc,. Polystyrene spheres can be used templates for the mesoporous hollow spheres for further applications such as drug delivery and metal absorption etc. In this work, we investigated the control of polystyrene particle diameter using various amounts of sodium dodecyl sulfate as a surfactant with pentanol as a co-surfactant. On increasing the amount of surfactant, the polystyrene sphere size was decreased (from 240 nm to 35 nm) due to micelle effect to the particle size. From light scattering analysis, the PS spheres have narrow particle size distribution. To prevent aggregation of PS particles, we used dropwise addition of styrene monomer with pentanol to the solution to reduce monomer droplets. Transmission Electron Microscopy (TEM) analysis shows extremely high dispersion of PS spheres with no aggregations. |
