SADFA 1 Dyeing Technology (Wool and Polyamide Fibres)
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General Dyeing Principles, Definitions of terms used in dyeing e.g. solution, dispersion, substantivity, affinity, adsorption, absorption-. Simple explanations of chemical bonds; i.e. ionic, hydrogen, covalent, van-der-Waal.
Wool And Nylon Comparison of their structure and chemistry, Directional Frictional Effect of wool. Scouring Reasons for and principles of, scouring wool and nylon. Detergency And Surfactants Setting Bleaching Milling |
Dyeing Of Wool And Nylon Laboratory Dyeing Dye bath Conditions Effect of dye bath conditions on the strength of wool. Importance of the iso-electric point. Faulty Dyeings Finishing |