Types of Dye 0.0 / 5 ? TextilesTextilesA2/A-levelAQA Created by: RebeccaCreated on: 20-05-15 21:57 DIRECT Dye Soluble in water Bright colours Poor colour fastness Moderate light fastness Salts can be added to dye bath to help fibres absorb dye 1 of 5 REACTIVE Dye Soluble in water Forms strong chemical bonds with cellulosic/protein fibres Bright colours Good colour fastness Dye needs to be 'fixed' Needs to be post-washed to get rid of excess dye (expensive) 2 of 5 VAT Dye Insoluble in water Excellent wash and light fastness Produces lighter shades of colour Liable to colour crocking 3 of 5 DISPERSE Dyes Insoluble in water Used to dye hydro-phobic fibres Smallest dye molecules Dye applied to fibres in fine aqueous dispersion (held inside by chemical bonds) 4 of 5 ACID Dyes Soluble in water Bind together with proteins in fibre Range of colours Easy to apply Good colour / light fastness Wash fastness varies Applied to fabric in acidic dye bath 5 of 5
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