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Lab 1 Part 1

Lab Practical 1

QuestionAnswer
Substantive Dyes Natural dyes that have a direct affinity for fiber
Adjective Dyes Natural dyes that require a mordant to fix the color to the fiber
Mordant Usually a metal salt (tin, aluminum, iron or chromium) that allows a dye to adhere to fiber.
Tannic Acid A defensive substance found in vacuoles of some plants, used as a mordant for cellulose fibers
Step 1 Collect and prepare the plant material for dye and fabric material
Step 2 Boil dye material in a beaker for 45 minutes to extract natural dye.
Step 3 Pour dye through cheese cloth to strain out the plant material.
Step 4 Treat fabric with an acidic mixture to create a pH
Step 5 Pre-wet fabrics in distilled water
Step 6 Place the beaker of dye on the hotplate, place fabric in dye, and bring to a boil. Stir often and let boil for 30-45 minutes.
Step 7 Turn off heat and let the fabric cool in the dye
Step 8 Rinse the cloth well in water and let air dry.
What did we use as mordant? Cream of Tartar
What is more important in the consistency of soap? Type of alkali (KOH vs. NaOH) is more important than saturation
Created by: kjay
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