The study of the coating solution
The decontamination efficiency of the coating film was determined by its components. A series of coating films for different radioactive contaminated material surfaces were prepared and the optimum content of each component in the film was determined. In our experiments, PVA was chosen to be the film-forming reagent and polyaniline doped with SO42−/TiO2 to be the electrical conductive material. Dispersing reagent, chelating reagents and plastic reagent were also added. Several important factors were determined as described below.
4.2.1. The effect of the content of polyaniline on the decontamination ratio
Fig. 4 shows the effect of the content of polyaniline on the decontamination ratio. When the content of polyaniline was up to 4%, the decontamination ratio was highest (∼90%) and remained stable. Therefore, an optimal content of 4% polyaniline in the film was determined.