Dye - Wikipedia
WEBA dye is a colored substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they color. Dye is generally applied in an aqueous solution and may require a mordant to improve the fastness of the dye on the fiber. [2]
Dye | Definition, Uses, Properties, & Types | Britannica
WEBMar 25, 2024 · Dye, substance used to impart color to textiles, paper, leather, and other materials such that the coloring is not readily altered by washing, heat, light, or other factors to which the material is likely to be exposed. Learn more about the properties, uses, and development of dyes in this article.
GENERAL INTRODUCTION TO THE CHEMISTRY OF DYES
WEBUnlike most organic compounds, dyes possess colour because they 1) absorb light in the visible spectrum (400–700 nm), 2) have at least one chromophore (colour-bearing group), 3) have a conjugated system, i.e. a structure with alternating double and single bonds, and 4) exhibit resonance of electrons, which is a stabilizing force in organic ...
Dye - Synthetic, Organic, Colorants | Britannica
WEBBlack objects absorb all visible light; white objects reflect all visible light. The brilliance of a colour increases with decreasing bandwidth. Synthetic dyes tend to give brilliant colours. This undoubtedly led to their rapid rise in popularity because, by comparison, natural dyes give rather drab, diffuse colorations.
Natural dye - Wikipedia
WEBNatural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources— roots, berries, bark, leaves, and wood —and other biological sources such as fungi. [1] Archaeologists have found evidence of textile dyeing dating back to the Neolithic period.
Dyes: Types, Structures, Applications, Properties
WEBAug 7, 2023 · A dye is a pigmented substance that possesses a strong attraction for the substrate onto which it is being administered. It is a highly electrifying and redolent organic compound. The pigment is commonly administered in an aqueous solution and may necessitate a mordant to enhance the permanence of the pigment on the fiber.
Dye - Colorants, Pigments, Textiles | Britannica
WEBGeneral features of dyes and dyeing. In dyeing operations, the dye must become closely and evenly associated with a specific material to give level (even) colouring with some measure of resistance to moisture, heat, and light—i.e., fastness. These factors involve both chemical and physical interactions between the dye and the fabric.
Dyeing - Wikipedia
WEBDyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material.
Making Color - Smithsonian Libraries
WEBMaking Color. Until the mid-1800s, all dyes came from natural sources, such as insects, roots, or minerals. Producing them was difficult and expensive. In 1856, an 18-year-old English chemist, William Henry Perkin, accidentally discovered one of the first synthetic dyes. In search of a treatment for malaria, Perkin experimented with coal tar, a ...
Structure and Properties of Dyes and Pigments | IntechOpen
WEBJun 11, 2021 · Dyes are coloured organic compounds that are used to impart colour to various substrates, including paper, leather, fur, hair, drugs, cosmetics, waxes, greases, plastics and textile materials. A Dye is a coloured compound due to the presence of chromophore and its fixed property to the acid or basic groups such as OH, SO3H, NH2, …
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