Preparation and Optical Property of TiO<SUB>2</SUB>-Coated Talc Pigment

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  • 二酸化チタンをタルクに被覆した光干渉顔料の調製とその光学的特性
  • 二酸化チタンをタルクに被覆した光干渉顔料の調整とその光学的特性
  • 2サンカ チタン オ タルク ニ ヒフク シタ ヒカリ カンショウ ガンリョウ ノ チョウセイ ト ソノ コウガクテキ トクセイ
  • Preparation and Optical Property of TiO2-Coated Talc Pigment

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We tried to prepare talc-based pearl pigment using natural talc, which is cheap and has a smooth touch, by coating of fine titanium dioxide particles on it. Since commercial talc is generally soft and hydrophobic, the formation of hybrid materials with it having interference characteristics has not been realized up to date. However, we successfully have prepared talc-based pearl pigment using raw talc stone, which has a comparatively strong layer structure, by controlling its particle condition with wet grinding and water sieving, although the interference color was weaker than that of the conventional mica-based pearl pigment. <BR>This talc-based pearl pigment showed soft color which was caused by the combination of diffusion and interference lights developed by the right gap of ledge-shaped stepwise structure of talc layer that formed by partial peeling during the grinding. <BR>This talc-based pearl pigment may not be applicable to the same fields for the commercial pearl pigment, but we expect it to be used for cosmetics as an extender because of its very smooth touch and soft interference texture.

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