Traditional Culture Encyclopedia - Traditional virtues - What's the difference between indigo dyeing and ordinary dyeing? What's the difference between indigo dyeing?
What's the difference between indigo dyeing and ordinary dyeing? What's the difference between indigo dyeing?
Indigo is a vat dye, which is not essentially different from all vat dyes. It is water-soluble in the reduced state, soluble in water and adsorbed on fabric fibers. When it meets oxygen in the air, it is oxidized into an oxidation state insoluble in water, and thus it is firmly deposited on the fiber surface, that is, it has washing fastness. The dyeing principle and process are exactly the same as other vat dyes, and there is no difference.
Of course, if you are asking about the comparison with dyes other than vat dyes, there is a big difference. Because other dyes are water-soluble and can be directly absorbed by fibers, there is no such link as oxidation fixation.
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