STEM imaging to characterize nanoparticle emissions and help to design nanosafer paints

Abstract : The growing use of common consumer goods made of materials containing nanoparticles could increase the exposure of consumers to these substances during their lifecycle. In view of evaluating this risk a setup and experimental protocol of weathering and mechanical solicitation was realized. Tests on two paints were performed. One of them releases mainly submicronic sized nanostructured nano-objects and their agglomerates and aggregates (NOAAs) of titanium dioxide in presence of free nano-TiO2. The formulation of the emissive paint is under question.