Fabricación de películas de vidrio estables dopadas con colorantes orgánicos naturales por técnica SOL-GEL y elaboración de una práctica didáctica de laboratorio.

Abstract

Abstract:This research work was conducted in the Physic Lab at the Universidad Técnica Particular de Loja, the manufacturing of stable glass films, doped with natural organic dyes through SOL-GEL technique and the elaboration of a laboratory practice, in which it was used the reagent the titanium tetraisopropoxide, water, acetic acid, isopropanol, natural organic dye, to the obtainment of films, the drying temperature, the centrifugation speed and the extraction of the dye were obtained according to the experimental design. They were obtained the glass films doped of turmeric and annatto, which were optically characterized, measuring absorbance, transmittance, micrography analysis and color degradation vs. time. It was observed that the total color degradation occurred in 41 days, it was determined the highest absorption depending on the wavelength around 500 and 700 nm, furthermore, they were presented pictures through micrographs uniform surfaces.