Effect of a Tetraethoxysilane Hydrolysis Reaction Catalyst on the Precipitation of Hydrolysis Products in the Pores of a Polyimide Track Membrane

This paper presents the results of obtaining a composite film based on polyimide track membranes filled with silica filler, although issue deposition this filler in pores given remained unexplored. The was obtained by hydrolysis tetraethoxysilane using an alkaline and acid catalyst. effect reaction catalyst precipitation products membrane. factors influencing formation silicon oxide nanofibers within matrix template (polyimide membrane) are determined. It found that use provides highest rates filling, while when catalyst, filling is practically not observed, only single filled. properties were investigated. SEM images surface chip presented. spatial structure films investigated FTIR spectroscopy. medium significantly decreases optical density index simultaneously increases their light transmission index. greatest changes observed range 500–1000 nm, there no detectable 340–500 nm. When same significant decrease relative D.