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Cosmetics, Volume 1, Issue 4 (December 2014) – 1 article , Pages 222-231

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Article
Influence of Temperature and Ultrasonic Treatment on Preparation of Titanium Phosphates and Their Powder Properties
by Hiroaki Onoda and Syohei Fujikado
Cosmetics 2014, 1(4), 222-231; https://doi.org/10.3390/cosmetics1040222 - 08 Oct 2014
Cited by 29 | Viewed by 5591
Abstract
Catalytically active titanium dioxide is conventionally used as a white pigment for cosmetics, but undesirably induces a certain degree of decomposition of sebum on the skin on exposure to ultraviolet radiation in sunlight. In this work, titanium phosphates were prepared as a novel [...] Read more.
Catalytically active titanium dioxide is conventionally used as a white pigment for cosmetics, but undesirably induces a certain degree of decomposition of sebum on the skin on exposure to ultraviolet radiation in sunlight. In this work, titanium phosphates were prepared as a novel white pigment for cosmetics using titanium sulfate and phosphoric acid at various temperatures, with/without ultrasonic treatment. The chemical composition, powder properties, photocatalytic activity, color phase, moisture retention, and smoothness of the phosphates were evaluated. These titanium phosphates had less photocatalytic activity than titanium dioxide, which should be beneficial for protecting sebum on the skin. Samples prepared with ultrasonic treatment had lower visible light absorption than those not subjected to ultrasonication. The sample prepared at 40 °C with ultrasonic treatment had higher moisture retention capacity than those prepared under other conditions. Samples prepared at 40 °C had lower slipping resistance than samples prepared at 7 °C. Full article
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