Elsevier

Materials Science and Engineering: C

Volume 95, 1 February 2019, Pages 95-103
Materials Science and Engineering: C

Synthesis of cosmetic grade TiO2-SiO2 core-shell powder from mechanically milled TiO2 nanopowder for commercial mass production

https://doi.org/10.1016/j.msec.2018.10.005Get rights and content

Highlights

  • Cosmetic grade TiO2-SiO2 core-shell NPs synthesized for commercial mass production.

  • As silicone is permitted by regulation the process can be industrially implemented.

  • TiO2-SiO2 core-shell NPs can eliminate the use of silicone or SiO2.

  • The reported process provides the right size (⁓100 nm) free from cytotoxicity.

Abstract

TiO2 nanoparticles as an active sunscreen ingredient generate reactive oxygen species (ROS) upon UVA irradiation which is cytotoxic, genotoxic and potential to damage the DNA. The health concern and potential risks from TiO2 can be mitigated by shielding the particles through the suitable coating. Considering the advantages of SiO2, SiO2 coated TiO2 nanoparticles can be a potential material which can replace TiO2 for thickening, whitening, lubricating, and sunscreen ingredient in cosmetics. This article reports the synthesis of cosmetic grade TiO2-SiO2 core-shell nanopowder from mechanically milled TiO2 nanopowder for commercial mass production. From commercial TiO2 nanopowder was fabricated through size reduction by nanoset milling. Followed by the fabricated TiO2 nanopowder coated with SiO2 through sol-gel technique. A suitable optimum condition was explored for cosmetic grade TiO2-SiO2 core-shell nanopowder. Various physical properties and optical properties were analyzed. Synthesized of cosmetic grade TiO2-SiO2 core-shell nanopowder found to be at 100 nm size, with a homogeneous SiO2 coating having UVA protection factor 39 and sun protection factor (SPF) is 42. From the size, safety, and SPF perspective it can be an excellent cosmetic grade powder and from process simplicity perspective it can be commercially viable.

Keywords

Cosmetic grade TiO2-SiO2
Sunscreen
SPF
UVA protection
Nanopowder

Cited by (0)

1

Basudev Swain and Jae Ryang Park, equally contributed to the manuscript.

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