| 초록 |
The preparation of mono-dispersed latex spheres has received considerable academic and industrial attention due to their wide applications such as catalyst, sorbent, and column packing materials. In this study, polystyrene-silica nanocomposite spheres have been prepared by sol-gel process with using seed particles, poly(styrene-co-MPS) copolymer spheres. The seed particles having silanol groups on their surfaces were synthesized by emulsion polymerization using MPS as a functional co-monomer. Then, the seed particles were reacted with TEOS as a precursor in order to obtain polystyrene-silica composites. The morphology of the composite latex spheres has been studied using a scanning electron microscope (SEM) and a transmission electron microscope (TEM). The total surface area and pore volume of the samples were evaluated from the analysis of N2 adsorption isotherm results. Adsorption capacity of albumin on the nanocomposite spheres were estimated with UV-spectrometer absorbance before and after adsorption experiments. |
