Photosensitive ink formulation and inkjet printing on flexible PET substrates

One paper proposes an alternative to the production of photochromic Ag:TiO 2 films compatible with industrialization and soft substrates.
Photochromic materials that can change color in visible light are good candidates for many applications, such as photoelectric sensors, smart inks and coatings, displays or optical memory. Among these materials, inorstiger Ag:TiO 2 films have been shown to be stable over time and exhibit multichromic photochromication, leading to potential high-performance systems
the
. However, their manufacturing processes are often based on laboratory equipment that is not suitable for industrialization and often involve heat treatment that is incompatible with soft materials, which limits the scope of application.
process can be applied to any kind of substrate
a paper suggests an alternative to the production of photochromic Ag:TiO 2 films compatible with industrialization and soft substrates. By adding thickeners and surfactants, water-based inks made from the dispersion system of TiO 2 nanoparticles and silver ions are made from commercial TiO 2 suspensions and silver salts to meet the requirements of the inkjet process. The inkjet printing process is optimized on the polyphenyl methylene glycol ester substrate to form a thin inormeric film after IR adjudication. This method can be applied to any kind of substrate, especially flexible and non-heat-resistant substrates, and can be marked at the industrial level. Finally, the photochromic behavior of the manufactured film is successfully evaluated after the activation step.