By M. L. Gulrajani
Using dyes and finishes has an important impression at the aesthetic attraction and performance of technical textiles. Drawing on key study, Advances within the dyeing and completing of technical textiles information vital advances during this box and their variety of purposes. half one stories advances in dyes and colourants, together with various useful dyes, the consequences they are often used to create and laws concerning their use. half is going directly to examine completing options, comparable to using enzymes, nanotechnology and speciality polymers.
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Extra resources for Advances in the dyeing and finishing of technical textiles
12d are reported to be highly efficient fluorescent molecules . Several polycyclic aromatic hydrocarbons have their inherent fluorescence. However, they are difficult to synthesize, and most of them are carcinogenic. The pyrene derivative in Fig. 12e, CI Solvent Green 7, is a well-known textile dye and has yellow-green fluorescence. CI Pigment Yellow 101 (Fig. 12f) is an azomethine exhibiting yellow-green fluorescence both in solution and in the solid state. CI Disperse Yellow 139 (Fig. 12h) is a structurally more complex dye providing a bright greenish-yellow color on hydrophobic substrates.
The compound in Fig. 12b, 4-dimethylamino-4′-nitro stilbene, has been investigated as a fluorescent dye. 12 Miscellaneous dyes. Biscyanovinyl fluorescent yellow dyes as in Fig. 12c are used in the coloration of polymers and synthetic fibers . Such dyes with heterocyclic end groups are also known . Benzofuran-based methane dyes as in Fig. 12d are reported to be highly efficient fluorescent molecules . Several polycyclic aromatic hydrocarbons have their inherent fluorescence. However, they are difficult to synthesize, and most of them are carcinogenic.
5p) called benzoxazinones are the extensively researched fluorescent dyes for non-textile applications [178– 180] and can be applied on textile substrates. They have solid-state fluorescence but lack the necessary stability to be exploited commercially. The dyes shown in Fig. 5r, s and t find applications in high-technology areas [181–184]. 2 Xanthene dyes These may be considered as rigidized triarylethine dyes which do not as a rule exhibit strong fluorescence. The rigidity imposed in the formation of the pyran ring makes them strongly fluorescent.