Triazine-based microcapsules with synergistic ultraviolet absorptions

A novel ultraviolet (UV) absorbing microcapsule was fabricated, featuring core–shell structures with triazine compounds as the inner core while water soluble polymers as the encapsulant shell. The composition and morphology of the microcapsules were optimized. Both encapsulation efficiency and load rate were analyzed. The encapsulation endowed with not only well aqueous dispersion, but also synergistic UV absorption capability. The application in sunscreen was demonstrated. Comparative studies were performed on the sun protection index of the creams, such as sun protection factors (SPF) and protection factor of UVA (PFA). Furthermore, the encapsulation enhanced the maintenance in aging measurements.