Use of Organic and Inorganic Pigments for Preparation of Colored Mica

In recent years hybrid pigments based on mica and an organic pigment have been prepared and used in different applications. In this paper, preparation of a colored mica was investigated and the samples were characterized by ultraviolet visible spectroscopy, optical and electronic microscopes. Results showed that the dye-uptake (%) on the mica surface varied from 10 to 80 percent depending on pH. Maximum dye-uptake was observed for pH 5-6. L*, a*, b*, h and C* values from colorimetric investigation demonstrated that colored mica samples of yellow, blue, gray and purple were prepared. It was shown that by this method not only the primary colors but also the secondary colors can be prepared. J. Color Sci. Tech. 4(2010), 9-15 © Institute for Color Science and Technology.