FORMATION PROCESSES OF THIN FILMS «TIO2- POLYIMIDE» SYSTEMS AND RESEARCH OF THEIR OPTICAL PROPERTIES

Abstract

In the present work was to study the processes of formation of heterophase systems TiO₂- polyimide derived from thin films and layers of titanium dioxide (TiO₂ ) with photocatalytic properties . The phase composition and surface morphology of the systems obtained by x-ray analysis and atomic force microscopy. Performed a comparative analysis of the absorption spectra of the resulting systems. It is shown that the photoreduction of titanium ions on the fibers is much more efficient. AFM has been studied Ti particle formation on the surface of films TiO_2. It was found that visually noticeable darkening of the film surface corresponds to a high -density Ti coating particles of 30-50 nm size. For TiO₂ - Polyimide systems defined conditions of continuous formation of shells or layers of polyimide. Found that polyimide - TiO₂ system derived from TiO₂ based thin films characterized by improved adhesive strength.

 Keywords: thin film, titanium dioxide, heterocontact systems, absorption spectra