Today, and in relation to the above points, the films are becoming very technically sophisticated products, which require a mastery of the chemical synthesis routes and a broad enough knowledge of the possibilities posed by the incorporation of additives. In this sense, it could be said that the most important application of sol-gel technology is the preparation of films to exploit properties such as chemical composition and mechanical resistance, among others
An additive is a substance that, when included in the formulation of a polymer such as films, substantially modifies its properties. Silica, alumina, and many other inorganic fillers have been added to polymeric matrices to modify their rheologica