Synthesis of acrylic-based opaque polymer and investigation of its potential as a substitute for TiO۲ in façade paint

Hollow polymers have attracted significant interest as effective opaque polymer pigments, offering a viable alternative to titanium dioxide (TiO۲) in paint formulations. This study explores the emulsion polymerization of opaque polymers derived from methyl methacrylate, resulting in particles with an average size of approximately ۷۱۲ nm, as confirmed by dynamic light scattering (DLS) analysis. Moreover, the gloss, hiding power and hardness of the prepared films were investigated. Notably, increasing the proportion of hollow polymers to ۲۰% of TiO۲ led to enhanced gloss values of ۸۵ and ۶۰ degrees, while the gloss at ۲۰ degrees remained stable. Additionally, a slight reduction in hiding power was measured. Finally, the König hardness increased to ۳۹ seconds with the incorporation of the opaque polymers, indicating the potential of these particles to replace TiO۲.

کلیدواژه ها:

opaque polymer ، hollow polymer ، opacity ، hiding power ، TiO۲