Titanium oxide that has photocatalytic activity is used as white pigment for cosmetics.A certain degree of sebum on the skin is decomposed by the ultraviolet radiation in sunlight.In this work,as novel white pigment,t...Titanium oxide that has photocatalytic activity is used as white pigment for cosmetics.A certain degree of sebum on the skin is decomposed by the ultraviolet radiation in sunlight.In this work,as novel white pigment,titanium phosphates were synthesized with titanium sulfate and phosphoric acid for cosmetics.Their chemical composition,powder properties,photocatalytic activity,color phase,moisture retention,and smoothness were studied.These titanium phosphates had less photocatalytic activity to protect the sebum on the skin.Samples without heating and those heated at 100℃showed high reflectance in the range of visible light.Sample prepared in Ti/P=3/2 had higher moisture retention than samples prepared in other Ti/P ratios.展开更多
Zinc oxide,which has photocatalytic activity,is used as a white pigment for cosmetics,resulting in a certain amount of sebum on the skin to be decomposed by the ultraviolet radiation in the sunlight.In this work,zinc ...Zinc oxide,which has photocatalytic activity,is used as a white pigment for cosmetics,resulting in a certain amount of sebum on the skin to be decomposed by the ultraviolet radiation in the sunlight.In this work,zinc phosphates as novel white pigments for use in cosmetics were prepared from zinc nitrate and sodium dihydrogen phosphate,and then ball-milled under various conditions.The chemical composition,powder properties,photocatalytic activity,color phase,moisture retention,and smoothness of the zinc phosphates were studied.The zinc phosphate particle size was decreased by mechanical treatment.In particular,the sample treated with sodium lactate solution had much smaller particles.The milled zinc phosphates exhibited less photocatalytic activity than zinc oxide,and thus should not decompose sebum on the skin.The milled zinc phosphates showed sufficiently high reflectance within the range of visible light to act as novel white pigments.The sample treated with sodium lactate solution had higher water retention than the sample treated with water.Further,the slip resistance and roughness of the powder particles decreased as a result of treatment with sodium lactate solution.展开更多
文摘Titanium oxide that has photocatalytic activity is used as white pigment for cosmetics.A certain degree of sebum on the skin is decomposed by the ultraviolet radiation in sunlight.In this work,as novel white pigment,titanium phosphates were synthesized with titanium sulfate and phosphoric acid for cosmetics.Their chemical composition,powder properties,photocatalytic activity,color phase,moisture retention,and smoothness were studied.These titanium phosphates had less photocatalytic activity to protect the sebum on the skin.Samples without heating and those heated at 100℃showed high reflectance in the range of visible light.Sample prepared in Ti/P=3/2 had higher moisture retention than samples prepared in other Ti/P ratios.
基金The support of this work by The Cosmetology Research Foundation is gratefully acknowledged.
文摘Zinc oxide,which has photocatalytic activity,is used as a white pigment for cosmetics,resulting in a certain amount of sebum on the skin to be decomposed by the ultraviolet radiation in the sunlight.In this work,zinc phosphates as novel white pigments for use in cosmetics were prepared from zinc nitrate and sodium dihydrogen phosphate,and then ball-milled under various conditions.The chemical composition,powder properties,photocatalytic activity,color phase,moisture retention,and smoothness of the zinc phosphates were studied.The zinc phosphate particle size was decreased by mechanical treatment.In particular,the sample treated with sodium lactate solution had much smaller particles.The milled zinc phosphates exhibited less photocatalytic activity than zinc oxide,and thus should not decompose sebum on the skin.The milled zinc phosphates showed sufficiently high reflectance within the range of visible light to act as novel white pigments.The sample treated with sodium lactate solution had higher water retention than the sample treated with water.Further,the slip resistance and roughness of the powder particles decreased as a result of treatment with sodium lactate solution.
