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4Post - Santiago Rubio Robin Kirkman Experiment 4 Direct...

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Santiago Rubio Robin Kirkman Experiment 4: Direct Dyes: Influence of Salt and mercerization in a Jet Dyeing September 16, 2010 II. Part 2 A. Observations: 1. The scoured, bleached, and mercerized (SBM) fabric was darker and redder than the scoured and bleached (SB) fabric. 2. There was no difference in hand between the SBM and SB fabrics. 3. The Jet machine was a very good agitator for the dye. 4. The fabric was very red and bright when it first came out the Jet machine but then it became less red as it dried. 5. The 43A multifiber strip had some fibers that were dyed by the Direct Red 24 but most of them were stained. Bleached cotton had a pale red color and viscose had a shiny red color. Wool, spun silk, Nylon 6,6, Dacron 64, and Dacron 54 were pink or had a hint of pink. Polypropelene, Orlon 75, Creslan 61, triacetate, modacrylic, and acetate all seemed to be beige in color with no red or pink shade. 6. Absorbance and concentration decreased as time allotted, but exhaustion increased. 7. (Absorbance Data) Time (min) Absorbance (509 nm) Absorbance (650 nm) Corrected Absorbance 5 0.2575 -0.0006 0.2581 10 0.2285 -0.0009 0.2294 15 0.2151 0.0011 0.2140 20 0.2136 0.0013 0.2123 25 0.1709 0.0016 0.1693 30 0.1574 -0.0076 0.1650 35 0.1707 -0.0053 0.1760 40 0.1604 -0.0050 0.1655 45 0.1468 -0.0035 0.1503 50 0.1474 -0.0027 0.1500 55 0.1400 -0.0033 0.1433 Figure 1: Table of Absorbance 8. Concentration and Exhaustion Time (min) Concentration x 100 % Exhaustion Temperature 5 897.593490 0.000000 48
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10 797.805618 11.117268 72 15 744.459747 17.060478 89 20 738.248003 17.752523 90 25 588.780094 34.404594 90 30 573.755047 36.078520 88 35 612.016745 31.815822 90 40 575.452321 35.889428 90 45 522.732494 41.762892 90 50 521.807341 41.865962 90 55 498.278535 44.487283 90 1.
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