The influence of different factors (structure of a film-forming solution, the content ofa polymer, a method of introducing of a polyacid and its concentration, the moisture content of a film and heat treatment) on the formation of sensors based on polyvinyl alcohol (PVA)-heteropolyacid composites is examined. Such materials are sensitive to temperature and an electric field. Different sensitivity of films is associated with the formation of intermolecular complexes of different structure, including those containing water molecules. The complex fonnãtion depends on the process conditions. It is established that the complexation leads to the formation of associates and to an increase in the molecular mobility of macromolecules and their fragments. Rheological, optical and dielectric methods have been employed to evaluate the structure and properties of the thus obtained fluids and the films produced on their basis.
Keywords: composites, complexes, associates, films, polyvinyl alcohol (PVA), heteropolyacids, sensors, technologies.