9 Post - Santiago Rubio Robin Kirkman Experiment 9 Dyeing...

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Santiago Rubio Robin Kirkman Experiment 9: Dyeing of an Acrylic Fabric with a Fluorescent Cationic Dye October 28, 2010 I. Part 2 A. Observations: 1. Our fabric A was a fluorescent magenta color. Fabric B was about the same shade but seemed slightly duller. 2. The initial color of dyebath was reddish. 3. After the fabric was removed from the dyebaths, dyebath A was almost clear while dyebath B was still reddish-pink. 4. The spectrophotometer gave us a reading for fabric A at 130.1% and for fabric B at 129.4%. 5. Multifiber Strip: Fiber Dyeability Acetate Stained / Pink SEF Modacrylic Dyed / Magenta Triacetate Stained / Very Light Pink Bleached Cotton Stained / Light Pink Creslan 61 Dyed / Magenta Dacron 54 Nothing / White Dacron 64 Dyed / Dull Purple-Pink Nylon 6,6 Stained / Light Pink Orlon 75 Dyed / Bright Pink Spun Silk Dyed / Hot Pink Polypropylene Nothing / White Viscose Stained / Light Pink Wool Stained / Light Pink Table 1: Dyeability of Multifiber Strip B. Calculations: 1. See attached sheet.
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C. Discussion: 1. The shade color of our fabrics turned out to be a magenta color because the dye we used was a fluorescent dye. Since the dye was a cationic dye, we can conclude that our Acrylic fabric contained negatively charged sites. The dye molecules were able to form ionic bonds with the fibers and thus create a dyed product. Both of our dyebaths had the same reddish color before entering the Gibbs machine. After dyebath A was finished, we were able to observe the color of
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9 Post - Santiago Rubio Robin Kirkman Experiment 9 Dyeing...

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