ISSN: 2044-9038 (Print) 2044-9046 (Electronic)

Clinical Practice

Dyes Journals

Dyes are colored substance that is applied to a substrate in an aqueous solution. Dyes are normally colored as they tend to absorb wavelengths of light more than other materials. Textiles are a collective mesh of natural or manmade fibers. Studies of these dyes dominated the market by 1900. The chemical nature of the materials to be coloured, and that colour is directly related to the molecular structure of the dye. Flax fibers are found within the Republic of Georgia dated back in an exceedingly prehistoric. The dyes were obtained from animal, vegetable with none or little or no process. The best supply of dyes has been from notably roots, berries, bark, and wood, however solely several have ever been used on an advert scale. Manufacture of commercial products involves colour at some stage, and today some 9,000 colorants with more than 50,000 trade names are used. Dyes developed for polyesters are referred to as disperse dyes. In this case, the mechanism of coloration involves “dissolving” the dye within the polymer matrix to make a solid-solid solution. Taking advantage of the documented principle that “like dissolves like”, disperse dyes are designed that are hydrophobic in nature. Such colorants are very sparingly soluble in water and derive their name from the very fact that they're dispersed instead of fully dissolved in water to hold out the dyeing process. An example is C.I. Disperse Blue 165 (Figure 7). Disperse dyes haven't any affinity for hydrophilic polymers like cellulose, which makes them unsuitable for colouring cotton, cellophane, and paper, but quite suitable for poly(ethylene terephthalate) and cellulose ester .

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