| 초록 |
Thiourea is an interesting ligand because it has been found to adsorb some noble metal ions effectively. The chelating resins containing thiourea have been prepared by reactions between thiourea and some polymers, such as crosslinked polychloromethylstyrene, polyvinylchloride, etc. In this study, crosslinked polystyrene nanoparticles were prepared via emulsion polymerization, and then chloroacetylated polystyrene nanoparticles were prepared via acylation reaction. The resulting polymer beads were then treated with thiourea, to yield thiourea-immobilized polymer nanoparticles. The adsorption behaviors of the polymer beads were investigated using a batch equilibration technique. The removal efficiency of the polymer beads can be varied on different conditions such as pH, contact time, concentration, temperature, etc. The experimental results will be presented in detail. |
