دانشگاه آزاد اسلامی واحد تهران جنوب

صفحه اصلی / اولین کنفرانس ملی شیمی، نانو مواد، پلیمر- چالش ها و کاربردها

ZINC OXIDE NANOPARTICLES IN MODERN SUNSCREENS

نویسندگان :

Arezoo Ershadi Yamchi¹ Amin Nazarloo²

1- دانشگاه تبریز 2- دانشگاه ازاد بناب

کلمات کلیدی :

Anti-bacterial،Nanoparticles،Sunscreen،Ultraviolet،Zinc Oxide

چکیده :

Sunscreens are used to provide protection against adverse effects of ultraviolet (UV)B (290–320 nm) and UVA (320–400 nm) radiation. According to the United States Food and Drug Administration, the protection factor against UVA should be at least one-third of the overall sun protection factor. Titanium dioxide (TiO2) and zinc oxide (ZnO) minerals are frequently employed in sunscreens as inorganic physical sun blockers. As TiO2 is more effective in UVB and ZnO in the UVA range, the combination of these particles assures a broad-band UV protection. However, to solve the cosmetic drawback of these opaque sunscreens, microsized TiO2 and ZnO have been increasingly replaced by TiO2 and ZnO nanoparticles (NPs) (<100 nm). In recent years, due to its electronic properties, zinc oxide has a potential application in solar cells, cosmetic and health industries and the production of natural dressings. Due to the antibacterial property of these particles and also due to the flagging the ultraviolet rays of the sun, they are used in the production of sunscreen creams. In this paper, sunscreen is prepared using zinc oxide. Among the important features of this formulation is the absence of a white effect on the skin after using the cream. Another advantage of the new sunscreen is that it is not absorbed by the skin and does not cause sensitivity, and it has antibacterial properties and high coverage.