Pigments

Abstract, Acrylic, Art, Artistic
Both major colorant sources are the pigments and dyes. However, there is some difference in the attributes, manner of use, benefits and the sore points of all them however quite often the terms, pigment, dye, colorant, dyestuff, paint, colour are incorrectly used interchangeably.
Colorants come from organic and inorganic sources and dyes constitute a large percentage of the organic colorants whereas the pigments come largely from the organic sources. Naturally sourced pigments are obtained from fruits, animals and minerals resources; however, majorly pigments comprise of inorganic oxides and salts like iron and chromium oxides which get diffused in powder form in the medium of application. The coloring properties of the diffusion are determined by the form and size of the pigment particle. The dyes are divided into natural dyes and artificial wherein the organic sources of dyes are the same as those of pigments while synthetic dyes are oil compound based.
Dyes and pigments both are equally important to people for supplying colour to all sort of items but the significant difference between the two lies in their basic manner of imparting colour. In case of dyes, color is diffused in the molecular level as they are soluble in the organic solvent or water whereas in pigments the colour is diffused as particles because they are insoluble in either type of the liquid medium. Additional compounds are needed for attaching the pigment particles to the substrate. For instance, pigments for paint require addition of polymer in paint for diffusion.
The vibrancy of colour of the dyes is dependent on its chromophore molecule’s electronic properties. Colorants from dyes impart greater brilliance and show greater colour strength besides being simpler to process. Among the dyes, basic dyes are more known for their vibrancy and brightness and compatibility with anionic and synthetic substances.
On the other hand, pigment colorants are stronger, solvent and heat stable besides being migration and lightfast. However, their cons include low color strength and brilliance. Due to the starkly different features of dyes and pigments many attempts were made to boost the properties of each colorant class. This led to the development of a new colorant class called as the Nanocolorants.
This class strives to combine the fantastic processability and superior chromatic features of dyestuffs and better durability of natural pigments. Combining the benefits of the colorants, Nanocolorants have emerged a much better alternative, and it has demonstrated superior features demonstrating tremendously useful in a number of applications such as preparing aqueous ink-jet inks, high-performance color resistant polymer coloration, electro-photographic toners amongst others.
Whatever the case, notwithstanding the features, dyes and pigments are indispensable elements for helping us to lead a color filled life.

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