Abstract
Spherical monodispersed (SM) silica particles of up to 0.8μm were obtained from ethanol solution of readily available Si(OEt)4 containing seeded silica. Growth in polydispersed system was also carried out in the same manner. Successive polydispersed growths showed an equal rate of increase in all particle diameter modes, suggesting that seeded silica grew by a polynuclear (surface reaction controlled) mechanism. Nielsen's chronomal analysis of the monodispersed growth also suggested the polynuclear mechanism with an exponent of polynuclear p=3 or 4.
