| 초록 |
Sol-gel processing of alkoxysilanes and organoalkoxysilanes is a promising technology to produce inorganic polymers, silicon oxides and other low-k materials. Because the properties of these materials depend critically on how the components are combined, we follow the dynamic evolution of the silica structures using alkoxysilane building blocks. To this end, molecular dynamics simulation that accounts for polycondensation of alkoxysilanes is developed to construct an amorphous silica network. Bulk density, porosity and elastic modulus are determined as a function of degree of condensation. The effect of alkyl substituents in alkylalkoxysilane on the modulus of silica network is also addressed. |
