| 초록 |
The synthesis method of high purity monodisperse spherical colloidalsilica was developed using tetramethoxysilane (TMOS) in presence of basecatalyst solution which is (2-hydroxyethyl)trimethylammonium hydroxide[(2-HyEt)TriAH] base on eco-friendly biomass. This reaction was carried out bysupplying two types of reactant (TMOS and catalyst solution) using aperistaltic pump at the same time and hydrolysis/condensation of TMOS with anaqueous solution (pH=9-10) at 90-100 ℃, while simultaneously distilling offmethanol, by-product. In results, the high concentration of colloidal silica(15, 20, 25 and 30 nm) was produced. This process has the advantage of beingable to freely control the silica contents and decrease the synthesis processtime. In this presentation, we will discuss the synthesis method ofhigh-concentration and yield spherical colloidal silica in detail. |
