Lab 9 - Santiago Rubio April 16, 2010 Exercise 9:...

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Santiago Rubio April 16, 2010 Exercise 9: Identification of two Fibers by Use of Microscope, Burning Test, Solvents and Stains 1. Abstract A blended yarn consisting of two unknown fibers was created in order to use fiber identification test methods learned in previous labs. The test methods consisted of burn tests, stain tests, and microscope tests. The microscope tests were longitudinal views, cross-sectional views, and polarizer tests. These tests were done on the yarn blend to indentify the two fibers. 2. Introduction In this experiment, different methods learned in the laboratory to identify fibers were applied on an unknown fiber blend. It is easy to indentify natural fibers under the microscope because they all have a unique structure. Synthetic fibers are more difficult to distinguish, so destructive methods such as burn tests and stain tests are used to tell them apart. For the unknown fiber blend, tests under the microscope were conducted first to distinguish the fibers. Then, destructive methods were applied to confirm the possible identity of the fibers. Conclusions on the fibers were reached at the end of the experiment. 3. Objective The first objective of this experiment was to apply the methods of fiber identification to an unknown blend yarn. Such methods include burn tests, stain tests, and microscope tests. The second objective was to determine the ratio of each fiber in the blend. 4. Materials Microscope Glass Slides Cover Slides Razor Cutting Block Thread Needle Cork Water Unknown Fiber A Unknown Fiber B T.I.S. Stain #1 T.I.S. Stain #3A Candle Matches Tweezers Safety Glasses
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5. Procedure 1. Make a 50/50 uniform yarn blend with the two unknown fibers. 2.
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This note was uploaded on 11/06/2010 for the course TX TMS 211 taught by Professor Hamouda during the Spring '10 term at N.C. State.

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Lab 9 - Santiago Rubio April 16, 2010 Exercise 9:...

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